diff --git a/doc/pub/week37/html/._week37-bs009.html b/doc/pub/week37/html/._week37-bs009.html
index 82c3c9405..3dee3d9bc 100644
--- a/doc/pub/week37/html/._week37-bs009.html
+++ b/doc/pub/week37/html/._week37-bs009.html
@@ -304,7 +304,7 @@ Maxpolydegree <span style="color: #666666">=</span> <span style="color: #666666"
 X <span style="color: #666666">=</span> np<span style="color: #666666">.</span>zeros((<span style="color: #008000">len</span>(x),Maxpolydegree))
 X[:,<span style="color: #666666">0</span>] <span style="color: #666666">=</span> <span style="color: #666666">1.0</span>
 
-<span style="color: #008000; font-weight: bold">for</span> polydegree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(<span style="color: #666666">1</span>, Maxpolydegree):
+<span style="color: #008000; font-weight: bold">for</span> polydegree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(<span style="color: #666666">1</span>, Maxpolydegree<span style="color: #666666">+1</span>):
     <span style="color: #008000; font-weight: bold">for</span> degree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(polydegree):
         X[:,degree] <span style="color: #666666">=</span> x<span style="color: #666666">**</span>(degree)
 
diff --git a/doc/pub/week37/html/._week37-bs010.html b/doc/pub/week37/html/._week37-bs010.html
index b213ab5fc..a40f7d770 100644
--- a/doc/pub/week37/html/._week37-bs010.html
+++ b/doc/pub/week37/html/._week37-bs010.html
@@ -313,7 +313,7 @@ Maxpolydegree <span style="color: #666666">=</span> <span style="color: #666666"
 X <span style="color: #666666">=</span> np<span style="color: #666666">.</span>zeros((<span style="color: #008000">len</span>(x),Maxpolydegree))
 X[:,<span style="color: #666666">0</span>] <span style="color: #666666">=</span> <span style="color: #666666">1.0</span>
 
-<span style="color: #008000; font-weight: bold">for</span> polydegree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(<span style="color: #666666">1</span>, Maxpolydegree):
+<span style="color: #008000; font-weight: bold">for</span> polydegree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(<span style="color: #666666">1</span>, Maxpolydegree<span style="color: #666666">+1</span>):
     <span style="color: #008000; font-weight: bold">for</span> degree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(polydegree):
         X[:,degree] <span style="color: #666666">=</span> x<span style="color: #666666">**</span>(degree)
 
diff --git a/doc/pub/week37/html/week37-reveal.html b/doc/pub/week37/html/week37-reveal.html
index 78ebcf348..605886141 100644
--- a/doc/pub/week37/html/week37-reveal.html
+++ b/doc/pub/week37/html/week37-reveal.html
@@ -423,7 +423,7 @@ Maxpolydegree = <span style="color: #B452CD">5</span>
 X = np.zeros((<span style="color: #658b00">len</span>(x),Maxpolydegree))
 X[:,<span style="color: #B452CD">0</span>] = <span style="color: #B452CD">1.0</span>
 
-<span style="color: #8B008B; font-weight: bold">for</span> polydegree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(<span style="color: #B452CD">1</span>, Maxpolydegree):
+<span style="color: #8B008B; font-weight: bold">for</span> polydegree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(<span style="color: #B452CD">1</span>, Maxpolydegree+<span style="color: #B452CD">1</span>):
     <span style="color: #8B008B; font-weight: bold">for</span> degree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(polydegree):
         X[:,degree] = x**(degree)
 
@@ -532,7 +532,7 @@ Maxpolydegree = <span style="color: #B452CD">5</span>
 X = np.zeros((<span style="color: #658b00">len</span>(x),Maxpolydegree))
 X[:,<span style="color: #B452CD">0</span>] = <span style="color: #B452CD">1.0</span>
 
-<span style="color: #8B008B; font-weight: bold">for</span> polydegree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(<span style="color: #B452CD">1</span>, Maxpolydegree):
+<span style="color: #8B008B; font-weight: bold">for</span> polydegree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(<span style="color: #B452CD">1</span>, Maxpolydegree+<span style="color: #B452CD">1</span>):
     <span style="color: #8B008B; font-weight: bold">for</span> degree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(polydegree):
         X[:,degree] = x**(degree)
 
diff --git a/doc/pub/week37/html/week37-solarized.html b/doc/pub/week37/html/week37-solarized.html
index 16a667595..13b2d648a 100644
--- a/doc/pub/week37/html/week37-solarized.html
+++ b/doc/pub/week37/html/week37-solarized.html
@@ -438,7 +438,7 @@ Maxpolydegree = <span style="color: #B452CD">5</span>
 X = np.zeros((<span style="color: #658b00">len</span>(x),Maxpolydegree))
 X[:,<span style="color: #B452CD">0</span>] = <span style="color: #B452CD">1.0</span>
 
-<span style="color: #8B008B; font-weight: bold">for</span> polydegree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(<span style="color: #B452CD">1</span>, Maxpolydegree):
+<span style="color: #8B008B; font-weight: bold">for</span> polydegree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(<span style="color: #B452CD">1</span>, Maxpolydegree+<span style="color: #B452CD">1</span>):
     <span style="color: #8B008B; font-weight: bold">for</span> degree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(polydegree):
         X[:,degree] = x**(degree)
 
@@ -546,7 +546,7 @@ Maxpolydegree = <span style="color: #B452CD">5</span>
 X = np.zeros((<span style="color: #658b00">len</span>(x),Maxpolydegree))
 X[:,<span style="color: #B452CD">0</span>] = <span style="color: #B452CD">1.0</span>
 
-<span style="color: #8B008B; font-weight: bold">for</span> polydegree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(<span style="color: #B452CD">1</span>, Maxpolydegree):
+<span style="color: #8B008B; font-weight: bold">for</span> polydegree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(<span style="color: #B452CD">1</span>, Maxpolydegree+<span style="color: #B452CD">1</span>):
     <span style="color: #8B008B; font-weight: bold">for</span> degree <span style="color: #8B008B">in</span> <span style="color: #658b00">range</span>(polydegree):
         X[:,degree] = x**(degree)
 
diff --git a/doc/pub/week37/html/week37.html b/doc/pub/week37/html/week37.html
index 55a92ad81..b32c6c36c 100644
--- a/doc/pub/week37/html/week37.html
+++ b/doc/pub/week37/html/week37.html
@@ -515,7 +515,7 @@ Maxpolydegree <span style="color: #666666">=</span> <span style="color: #666666"
 X <span style="color: #666666">=</span> np<span style="color: #666666">.</span>zeros((<span style="color: #008000">len</span>(x),Maxpolydegree))
 X[:,<span style="color: #666666">0</span>] <span style="color: #666666">=</span> <span style="color: #666666">1.0</span>
 
-<span style="color: #008000; font-weight: bold">for</span> polydegree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(<span style="color: #666666">1</span>, Maxpolydegree):
+<span style="color: #008000; font-weight: bold">for</span> polydegree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(<span style="color: #666666">1</span>, Maxpolydegree<span style="color: #666666">+1</span>):
     <span style="color: #008000; font-weight: bold">for</span> degree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(polydegree):
         X[:,degree] <span style="color: #666666">=</span> x<span style="color: #666666">**</span>(degree)
 
@@ -623,7 +623,7 @@ Maxpolydegree <span style="color: #666666">=</span> <span style="color: #666666"
 X <span style="color: #666666">=</span> np<span style="color: #666666">.</span>zeros((<span style="color: #008000">len</span>(x),Maxpolydegree))
 X[:,<span style="color: #666666">0</span>] <span style="color: #666666">=</span> <span style="color: #666666">1.0</span>
 
-<span style="color: #008000; font-weight: bold">for</span> polydegree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(<span style="color: #666666">1</span>, Maxpolydegree):
+<span style="color: #008000; font-weight: bold">for</span> polydegree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(<span style="color: #666666">1</span>, Maxpolydegree<span style="color: #666666">+1</span>):
     <span style="color: #008000; font-weight: bold">for</span> degree <span style="color: #AA22FF; font-weight: bold">in</span> <span style="color: #008000">range</span>(polydegree):
         X[:,degree] <span style="color: #666666">=</span> x<span style="color: #666666">**</span>(degree)
 
diff --git a/doc/pub/week37/ipynb/ipynb-week37-src.tar.gz b/doc/pub/week37/ipynb/ipynb-week37-src.tar.gz
index f57b9959c..b2f81f95a 100644
Binary files a/doc/pub/week37/ipynb/ipynb-week37-src.tar.gz and b/doc/pub/week37/ipynb/ipynb-week37-src.tar.gz differ
diff --git a/doc/pub/week37/ipynb/week37.ipynb b/doc/pub/week37/ipynb/week37.ipynb
index f4141f747..2687a3a87 100644
--- a/doc/pub/week37/ipynb/week37.ipynb
+++ b/doc/pub/week37/ipynb/week37.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "46a56d46",
+   "id": "3413b194",
    "metadata": {
     "editable": true
    },
@@ -14,7 +14,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1374b1a3",
+   "id": "ecf8eb8c",
    "metadata": {
     "editable": true
    },
@@ -29,7 +29,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "adea2cb5",
+   "id": "b873b4b3",
    "metadata": {
     "editable": true
    },
@@ -54,7 +54,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cd6f0fc8",
+   "id": "6f7dcfc4",
    "metadata": {
     "editable": true
    },
@@ -64,7 +64,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d26e4f99",
+   "id": "f578dcee",
    "metadata": {
     "editable": true
    },
@@ -87,7 +87,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "80fe5a22",
+   "id": "7c52f047",
    "metadata": {
     "editable": true
    },
@@ -99,7 +99,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5c8cb124",
+   "id": "eb27f88a",
    "metadata": {
     "editable": true
    },
@@ -112,7 +112,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2808584f",
+   "id": "99bd0787",
    "metadata": {
     "editable": true
    },
@@ -124,7 +124,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "29c2bed5",
+   "id": "323d053d",
    "metadata": {
     "editable": true
    },
@@ -136,7 +136,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f938df4d",
+   "id": "c5bcb8bb",
    "metadata": {
     "editable": true
    },
@@ -148,7 +148,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ad7010d2",
+   "id": "00c07681",
    "metadata": {
     "editable": true
    },
@@ -159,7 +159,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ed4b769b",
+   "id": "24fec3d9",
    "metadata": {
     "editable": true
    },
@@ -171,7 +171,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d9becfab",
+   "id": "dc03828d",
    "metadata": {
     "editable": true
    },
@@ -182,7 +182,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e62c9581",
+   "id": "ee74422b",
    "metadata": {
     "editable": true
    },
@@ -194,7 +194,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "de1ff4d0",
+   "id": "7dcdd285",
    "metadata": {
     "editable": true
    },
@@ -204,7 +204,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6ea3d7d4",
+   "id": "39107290",
    "metadata": {
     "editable": true
    },
@@ -235,7 +235,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7b8757e3",
+   "id": "378cc7e7",
    "metadata": {
     "editable": true
    },
@@ -247,7 +247,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "eff9048e",
+   "id": "f55bf648",
    "metadata": {
     "editable": true
    },
@@ -259,7 +259,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6d2f1455",
+   "id": "982e45f8",
    "metadata": {
     "editable": true
    },
@@ -269,7 +269,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4d8f2d17",
+   "id": "52050954",
    "metadata": {
     "editable": true
    },
@@ -281,7 +281,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4df87281",
+   "id": "401762d1",
    "metadata": {
     "editable": true
    },
@@ -291,7 +291,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ce2f3f73",
+   "id": "c39377bd",
    "metadata": {
     "editable": true
    },
@@ -303,7 +303,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e1335340",
+   "id": "b16491e9",
    "metadata": {
     "editable": true
    },
@@ -313,7 +313,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "77692e9c",
+   "id": "fed7e2df",
    "metadata": {
     "editable": true
    },
@@ -325,7 +325,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a4324010",
+   "id": "9beafdd9",
    "metadata": {
     "editable": true
    },
@@ -337,7 +337,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8ac372df",
+   "id": "ad2ee7bf",
    "metadata": {
     "editable": true
    },
@@ -349,7 +349,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4337f8ef",
+   "id": "10eb9160",
    "metadata": {
     "editable": true
    },
@@ -359,7 +359,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d3d7044f",
+   "id": "18cda10f",
    "metadata": {
     "editable": true
    },
@@ -371,7 +371,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b8d86aed",
+   "id": "fb6f2e9d",
    "metadata": {
     "editable": true
    },
@@ -381,7 +381,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "017b52d8",
+   "id": "3d415353",
    "metadata": {
     "editable": true
    },
@@ -398,7 +398,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7d8cea93",
+   "id": "9dd02f04",
    "metadata": {
     "editable": true
    },
@@ -417,7 +417,7 @@
   {
    "cell_type": "code",
    "execution_count": 1,
-   "id": "2b7bf883",
+   "id": "f6d8eab0",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -446,7 +446,7 @@
     "X = np.zeros((len(x),Maxpolydegree))\n",
     "X[:,0] = 1.0\n",
     "\n",
-    "for polydegree in range(1, Maxpolydegree):\n",
+    "for polydegree in range(1, Maxpolydegree+1):\n",
     "    for degree in range(polydegree):\n",
     "        X[:,degree] = x**(degree)\n",
     "\n",
@@ -493,7 +493,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7c5bb3a1",
+   "id": "dd37b16d",
    "metadata": {
     "editable": true
    },
@@ -503,7 +503,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "58678f3b",
+   "id": "cc8c954c",
    "metadata": {
     "editable": true
    },
@@ -533,7 +533,7 @@
   {
    "cell_type": "code",
    "execution_count": 2,
-   "id": "f1c6b3a0",
+   "id": "e631888e",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -556,7 +556,7 @@
     "X = np.zeros((len(x),Maxpolydegree))\n",
     "X[:,0] = 1.0\n",
     "\n",
-    "for polydegree in range(1, Maxpolydegree):\n",
+    "for polydegree in range(1, Maxpolydegree+1):\n",
     "    for degree in range(polydegree):\n",
     "        X[:,degree] = x**(degree)\n",
     "\n",
@@ -582,7 +582,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4867c91e",
+   "id": "e8a1b23b",
    "metadata": {
     "editable": true
    },
@@ -596,7 +596,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6f42d972",
+   "id": "6462ab01",
    "metadata": {
     "editable": true
    },
@@ -608,7 +608,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0e2855da",
+   "id": "b1c5c4f0",
    "metadata": {
     "editable": true
    },
@@ -618,7 +618,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "474aa06f",
+   "id": "3b4b3365",
    "metadata": {
     "editable": true
    },
@@ -630,7 +630,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e16741dd",
+   "id": "a87967e1",
    "metadata": {
     "editable": true
    },
@@ -640,7 +640,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6feefbf9",
+   "id": "a995bc0d",
    "metadata": {
     "editable": true
    },
@@ -652,7 +652,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5161bf78",
+   "id": "cde16d8a",
    "metadata": {
     "editable": true
    },
@@ -662,7 +662,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5f8f5900",
+   "id": "40002307",
    "metadata": {
     "editable": true
    },
@@ -674,7 +674,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e75204d4",
+   "id": "ad1f47f2",
    "metadata": {
     "editable": true
    },
@@ -684,7 +684,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1d7a6025",
+   "id": "44205dca",
    "metadata": {
     "editable": true
    },
@@ -700,7 +700,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "87c1931f",
+   "id": "5911811f",
    "metadata": {
     "editable": true
    },
@@ -712,7 +712,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "03131e43",
+   "id": "1a29cb1b",
    "metadata": {
     "editable": true
    },
@@ -722,7 +722,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e369fa5d",
+   "id": "3c8baa81",
    "metadata": {
     "editable": true
    },
@@ -734,7 +734,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c60164de",
+   "id": "99c31881",
    "metadata": {
     "editable": true
    },
@@ -747,7 +747,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fcad988b",
+   "id": "7b0c2d78",
    "metadata": {
     "editable": true
    },
@@ -759,7 +759,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dfd17962",
+   "id": "5ab49aec",
    "metadata": {
     "editable": true
    },
@@ -769,7 +769,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "29ff357a",
+   "id": "c64df7b2",
    "metadata": {
     "editable": true
    },
@@ -781,7 +781,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "006fbf5a",
+   "id": "7848825a",
    "metadata": {
     "editable": true
    },
@@ -791,7 +791,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "60836e2f",
+   "id": "99512677",
    "metadata": {
     "editable": true
    },
@@ -803,7 +803,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3c83e2ab",
+   "id": "d2415ce3",
    "metadata": {
     "editable": true
    },
@@ -815,7 +815,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c87214df",
+   "id": "ff4c9a96",
    "metadata": {
     "editable": true
    },
@@ -825,7 +825,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fe609b64",
+   "id": "32566e9b",
    "metadata": {
     "editable": true
    },
@@ -837,7 +837,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "72eed3a8",
+   "id": "5305fbde",
    "metadata": {
     "editable": true
    },
@@ -849,7 +849,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7bcec8b4",
+   "id": "3689be86",
    "metadata": {
     "editable": true
    },
@@ -861,7 +861,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3f39c085",
+   "id": "408012c9",
    "metadata": {
     "editable": true
    },
@@ -871,7 +871,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "59359036",
+   "id": "64de98b1",
    "metadata": {
     "editable": true
    },
@@ -883,7 +883,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "967e31ea",
+   "id": "95077ce1",
    "metadata": {
     "editable": true
    },
@@ -893,7 +893,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f88eb063",
+   "id": "5ae72845",
    "metadata": {
     "editable": true
    },
@@ -912,7 +912,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "da0466a6",
+   "id": "37f35940",
    "metadata": {
     "editable": true
    },
@@ -940,7 +940,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8258e890",
+   "id": "cec4ccbf",
    "metadata": {
     "editable": true
    },
@@ -966,7 +966,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "12ccc9a0",
+   "id": "91ebab74",
    "metadata": {
     "editable": true
    },
@@ -983,7 +983,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "963ed8d5",
+   "id": "f3ac7279",
    "metadata": {
     "editable": true
    },
@@ -1003,7 +1003,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c83d65fe",
+   "id": "ac4c5cdb",
    "metadata": {
     "editable": true
    },
@@ -1032,7 +1032,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d8b6e06f",
+   "id": "83ae82a8",
    "metadata": {
     "editable": true
    },
@@ -1057,7 +1057,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1f5b9f45",
+   "id": "4f9d0cf9",
    "metadata": {
     "editable": true
    },
@@ -1071,7 +1071,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3b42884e",
+   "id": "bc98c140",
    "metadata": {
     "editable": true
    },
@@ -1083,7 +1083,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c8c88d2b",
+   "id": "5ed9625e",
    "metadata": {
     "editable": true
    },
@@ -1096,7 +1096,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d02408b2",
+   "id": "1937dce6",
    "metadata": {
     "editable": true
    },
@@ -1107,7 +1107,7 @@
   {
    "cell_type": "code",
    "execution_count": 3,
-   "id": "3a891372",
+   "id": "49b5827a",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1146,7 +1146,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1ddce925",
+   "id": "d59c7cb3",
    "metadata": {
     "editable": true
    },
@@ -1171,7 +1171,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ea050093",
+   "id": "dc98f057",
    "metadata": {
     "editable": true
    },
@@ -1191,7 +1191,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9ca353a6",
+   "id": "16792734",
    "metadata": {
     "editable": true
    },
@@ -1203,7 +1203,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "faffed3e",
+   "id": "a9191ac1",
    "metadata": {
     "editable": true
    },
@@ -1213,7 +1213,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "df354ebd",
+   "id": "b512964a",
    "metadata": {
     "editable": true
    },
@@ -1228,7 +1228,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "465f4589",
+   "id": "ad322dc6",
    "metadata": {
     "editable": true
    },
@@ -1241,7 +1241,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1530ff70",
+   "id": "d1149979",
    "metadata": {
     "editable": true
    },
@@ -1254,7 +1254,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "742c74c1",
+   "id": "bae2c22e",
    "metadata": {
     "editable": true
    },
@@ -1266,7 +1266,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d8695a18",
+   "id": "7815160c",
    "metadata": {
     "editable": true
    },
@@ -1279,7 +1279,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0408f756",
+   "id": "dac5fb75",
    "metadata": {
     "editable": true
    },
@@ -1290,7 +1290,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1f846273",
+   "id": "8b5e65ba",
    "metadata": {
     "editable": true
    },
@@ -1304,7 +1304,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "39c7e645",
+   "id": "1b98fbe5",
    "metadata": {
     "editable": true
    },
@@ -1314,7 +1314,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "df81785c",
+   "id": "e7409503",
    "metadata": {
     "editable": true
    },
@@ -1328,7 +1328,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f86ffcb2",
+   "id": "7adc92e9",
    "metadata": {
     "editable": true
    },
@@ -1341,7 +1341,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1ff1512a",
+   "id": "9d58e53e",
    "metadata": {
     "editable": true
    },
@@ -1354,7 +1354,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "553331b0",
+   "id": "d63c1e78",
    "metadata": {
     "editable": true
    },
@@ -1364,7 +1364,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cf294174",
+   "id": "3ab9990a",
    "metadata": {
     "editable": true
    },
@@ -1377,7 +1377,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b175e6bc",
+   "id": "385e8e52",
    "metadata": {
     "editable": true
    },
@@ -1387,7 +1387,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "61fc3205",
+   "id": "4dbefb62",
    "metadata": {
     "editable": true
    },
@@ -1400,7 +1400,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0c7f0b49",
+   "id": "23f4e746",
    "metadata": {
     "editable": true
    },
@@ -1412,7 +1412,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f57be406",
+   "id": "2cffab06",
    "metadata": {
     "editable": true
    },
@@ -1431,7 +1431,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7000cae7",
+   "id": "04ba02de",
    "metadata": {
     "editable": true
    },
@@ -1444,7 +1444,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0f92a4be",
+   "id": "53de7c66",
    "metadata": {
     "editable": true
    },
@@ -1456,7 +1456,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8bdf35ca",
+   "id": "f5054463",
    "metadata": {
     "editable": true
    },
@@ -1469,7 +1469,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bc04e4d5",
+   "id": "07569301",
    "metadata": {
     "editable": true
    },
@@ -1489,7 +1489,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7bd03ecd",
+   "id": "8f6dd2ff",
    "metadata": {
     "editable": true
    },
@@ -1512,7 +1512,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "62599ed0",
+   "id": "18e63889",
    "metadata": {
     "editable": true
    },
@@ -1527,7 +1527,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "89f67ea8",
+   "id": "66177c23",
    "metadata": {
     "editable": true
    },
@@ -1539,7 +1539,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3728d1d6",
+   "id": "10312f61",
    "metadata": {
     "editable": true
    },
@@ -1559,7 +1559,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dc9504c8",
+   "id": "12b94aae",
    "metadata": {
     "editable": true
    },
@@ -1579,7 +1579,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f40b4456",
+   "id": "c3f7b485",
    "metadata": {
     "editable": true
    },
@@ -1603,7 +1603,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a02150bc",
+   "id": "e08528e6",
    "metadata": {
     "editable": true
    },
@@ -1624,7 +1624,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bdd0aa8e",
+   "id": "c9ac007c",
    "metadata": {
     "editable": true
    },
@@ -1654,7 +1654,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f3a2447b",
+   "id": "0f4a3620",
    "metadata": {
     "editable": true
    },
@@ -1678,7 +1678,7 @@
   {
    "cell_type": "code",
    "execution_count": 4,
-   "id": "b72af39d",
+   "id": "097242cb",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1715,7 +1715,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5cec1278",
+   "id": "751ffe74",
    "metadata": {
     "editable": true
    },
@@ -1725,7 +1725,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6ce13c1f",
+   "id": "dd1cb382",
    "metadata": {
     "editable": true
    },
@@ -1736,7 +1736,7 @@
   {
    "cell_type": "code",
    "execution_count": 5,
-   "id": "afb9a7b9",
+   "id": "c127ea22",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1756,7 +1756,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "27296af0",
+   "id": "03706aaa",
    "metadata": {
     "editable": true
    },
@@ -1774,7 +1774,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "63285cae",
+   "id": "2bd565a3",
    "metadata": {
     "editable": true
    },
@@ -1786,7 +1786,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e8d9bfac",
+   "id": "b5ba3c44",
    "metadata": {
     "editable": true
    },
@@ -1803,7 +1803,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "475018c9",
+   "id": "fd0d03ce",
    "metadata": {
     "editable": true
    },
@@ -1815,7 +1815,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e3ba937e",
+   "id": "9a06d7b1",
    "metadata": {
     "editable": true
    },
@@ -1825,7 +1825,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bd90810f",
+   "id": "f0884966",
    "metadata": {
     "editable": true
    },
@@ -1837,7 +1837,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6fbbf603",
+   "id": "9fcfd8e4",
    "metadata": {
     "editable": true
    },
@@ -1854,7 +1854,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f93a7b76",
+   "id": "72786344",
    "metadata": {
     "editable": true
    },
@@ -1866,7 +1866,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4383ff94",
+   "id": "9cbe3bd1",
    "metadata": {
     "editable": true
    },
@@ -1876,7 +1876,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "13a24a44",
+   "id": "a9f1b60c",
    "metadata": {
     "editable": true
    },
@@ -1888,7 +1888,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1d8f4bac",
+   "id": "df279145",
    "metadata": {
     "editable": true
    },
@@ -1898,7 +1898,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c81746c2",
+   "id": "cc5b4571",
    "metadata": {
     "editable": true
    },
@@ -1910,7 +1910,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d8f0280d",
+   "id": "0b73c25e",
    "metadata": {
     "editable": true
    },
@@ -1920,7 +1920,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "10f144d6",
+   "id": "160fb1bb",
    "metadata": {
     "editable": true
    },
@@ -1936,7 +1936,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5263329b",
+   "id": "a6436245",
    "metadata": {
     "editable": true
    },
@@ -1947,7 +1947,7 @@
   {
    "cell_type": "code",
    "execution_count": 6,
-   "id": "8ed39e71",
+   "id": "a51b5594",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2012,7 +2012,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f1314787",
+   "id": "81a7b921",
    "metadata": {
     "editable": true
    },
@@ -2023,7 +2023,7 @@
   {
    "cell_type": "code",
    "execution_count": 7,
-   "id": "1644013c",
+   "id": "83c3d0e1",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2080,7 +2080,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "46fe59da",
+   "id": "a5fccc44",
    "metadata": {
     "editable": true
    },
@@ -2118,7 +2118,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a7eac467",
+   "id": "32bb1864",
    "metadata": {
     "editable": true
    },
@@ -2129,7 +2129,7 @@
   {
    "cell_type": "code",
    "execution_count": 8,
-   "id": "d55c7ff9",
+   "id": "be84f020",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2211,7 +2211,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8a2ad032",
+   "id": "93f4f24b",
    "metadata": {
     "editable": true
    },
@@ -2236,7 +2236,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "88bfe698",
+   "id": "4775ea37",
    "metadata": {
     "editable": true
    },
@@ -2252,7 +2252,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c9232a13",
+   "id": "d6dc5694",
    "metadata": {
     "editable": true
    },
@@ -2268,7 +2268,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "be7c88c8",
+   "id": "6f9343ce",
    "metadata": {
     "editable": true
    },
@@ -2282,7 +2282,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "295c2a92",
+   "id": "c1180543",
    "metadata": {
     "editable": true
    },
@@ -2296,7 +2296,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fbd2cfca",
+   "id": "8d7e0832",
    "metadata": {
     "editable": true
    },
@@ -2324,7 +2324,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4d146338",
+   "id": "1236691a",
    "metadata": {
     "editable": true
    },
@@ -2337,7 +2337,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
-   "id": "fe5ad263",
+   "id": "f3da8566",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2437,7 +2437,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7e17054e",
+   "id": "af0e6ba4",
    "metadata": {
     "editable": true
    },
@@ -2448,7 +2448,7 @@
   {
    "cell_type": "code",
    "execution_count": 10,
-   "id": "52a4ad07",
+   "id": "fddda52e",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2537,7 +2537,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dcb3368e",
+   "id": "5fee654f",
    "metadata": {
     "editable": true
    },
@@ -2547,7 +2547,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8bc22ff0",
+   "id": "c24b5918",
    "metadata": {
     "editable": true
    },
@@ -2560,7 +2560,7 @@
   {
    "cell_type": "code",
    "execution_count": 11,
-   "id": "76ef249b",
+   "id": "974f9c58",
    "metadata": {
     "collapsed": false,
     "editable": true
diff --git a/doc/src/week37/week37.do.txt b/doc/src/week37/week37.do.txt
index f583c81da..b0f732ace 100644
--- a/doc/src/week37/week37.do.txt
+++ b/doc/src/week37/week37.do.txt
@@ -200,7 +200,7 @@ Maxpolydegree = 5
 X = np.zeros((len(x),Maxpolydegree))
 X[:,0] = 1.0
 
-for polydegree in range(1, Maxpolydegree):
+for polydegree in range(1, Maxpolydegree+1):
     for degree in range(polydegree):
         X[:,degree] = x**(degree)
 
@@ -289,7 +289,7 @@ Maxpolydegree = 5
 X = np.zeros((len(x),Maxpolydegree))
 X[:,0] = 1.0
 
-for polydegree in range(1, Maxpolydegree):
+for polydegree in range(1, Maxpolydegree+1):
     for degree in range(polydegree):
         X[:,degree] = x**(degree)