Added(A)/Deleted(D) following books

 M  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch1.ipynb
M  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch2.ipynb
M  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch3.ipynb
M  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch4.ipynb
M  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch5.ipynb
M  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch6.ipynb
A  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/screenshots/Screenshot_from_2017-01-03_12-52-03.png
A  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/screenshots/Screenshot_from_2017-01-03_12-52-44.png
A  Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/screenshots/Screenshot_from_2017-01-03_12-53-12.png

1 files changed, 334 insertions, 114 deletions

diff --git a/Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch2.ipynb b/Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch2.ipynb
index 5befafb8..62a6ed2c 100644
--- a/Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch2.ipynb
+++ b/Advanced_Measurements_And_Instrumentation_by_A._K._Sawhney/Ch2.ipynb
@@ -2,14 +2,20 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "deletable": true,
+    "editable": true
+   },
    "source": [
     "# Chapter 2:Primary sensing elements and transducers"
    ]
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "deletable": true,
+    "editable": true
+   },
    "source": [
     "## Exa 2.1"
    ]
@@ -18,7 +24,9 @@
    "cell_type": "code",
    "execution_count": 59,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -45,7 +53,10 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "deletable": true,
+    "editable": true
+   },
    "source": [
     "## Exa 2.2"
    ]
@@ -54,7 +65,9 @@
    "cell_type": "code",
    "execution_count": 60,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -85,7 +98,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.3"
@@ -95,7 +110,9 @@
    "cell_type": "code",
    "execution_count": 61,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -129,7 +146,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.4"
@@ -139,7 +158,9 @@
    "cell_type": "code",
    "execution_count": 62,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -164,7 +185,9 @@
    "cell_type": "code",
    "execution_count": 63,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -209,7 +232,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.6"
@@ -219,7 +244,9 @@
    "cell_type": "code",
    "execution_count": 64,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -246,7 +273,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.7"
@@ -256,7 +285,9 @@
    "cell_type": "code",
    "execution_count": 65,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -284,7 +315,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.8"
@@ -294,7 +327,9 @@
    "cell_type": "code",
    "execution_count": 66,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -307,6 +342,7 @@
    ],
    "source": [
     "# 2.8\n",
+    "import math\n",
     "Cd=0.6;\n",
     "H=0.5;\n",
     "dH=0.01;\n",
@@ -319,7 +355,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.9"
@@ -329,7 +367,9 @@
    "cell_type": "code",
    "execution_count": 67,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -362,7 +402,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.11"
@@ -372,7 +414,9 @@
    "cell_type": "code",
    "execution_count": 68,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -399,7 +443,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.12"
@@ -409,7 +455,9 @@
    "cell_type": "code",
    "execution_count": 69,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -437,7 +485,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.13"
@@ -447,7 +497,9 @@
    "cell_type": "code",
    "execution_count": 70,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -469,7 +521,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.14"
@@ -479,7 +533,9 @@
    "cell_type": "code",
    "execution_count": 71,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -508,7 +564,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.15"
@@ -518,7 +576,9 @@
    "cell_type": "code",
    "execution_count": 72,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -546,7 +606,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.16"
@@ -556,7 +618,9 @@
    "cell_type": "code",
    "execution_count": 73,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -578,7 +642,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.17"
@@ -588,7 +654,9 @@
    "cell_type": "code",
    "execution_count": 74,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -617,7 +685,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.18"
@@ -627,7 +697,9 @@
    "cell_type": "code",
    "execution_count": 75,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -652,7 +724,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.19"
@@ -662,7 +736,9 @@
    "cell_type": "code",
    "execution_count": 76,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -697,7 +773,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.20"
@@ -707,7 +785,9 @@
    "cell_type": "code",
    "execution_count": 77,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -740,7 +820,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.21"
@@ -750,7 +832,9 @@
    "cell_type": "code",
    "execution_count": 78,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -779,7 +863,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.22"
@@ -789,7 +875,9 @@
    "cell_type": "code",
    "execution_count": 79,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -818,7 +906,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.23"
@@ -828,7 +918,9 @@
    "cell_type": "code",
    "execution_count": 80,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -855,7 +947,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.24"
@@ -865,7 +959,9 @@
    "cell_type": "code",
    "execution_count": 81,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -889,7 +985,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.25"
@@ -899,7 +997,9 @@
    "cell_type": "code",
    "execution_count": 82,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -923,7 +1023,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.26"
@@ -933,7 +1035,9 @@
    "cell_type": "code",
    "execution_count": 83,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -957,7 +1061,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.27"
@@ -967,7 +1073,9 @@
    "cell_type": "code",
    "execution_count": 84,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1000,7 +1108,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.28"
@@ -1010,7 +1120,9 @@
    "cell_type": "code",
    "execution_count": 85,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1032,7 +1144,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.29"
@@ -1042,7 +1156,9 @@
    "cell_type": "code",
    "execution_count": 86,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1073,7 +1189,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.30"
@@ -1083,7 +1201,9 @@
    "cell_type": "code",
    "execution_count": 87,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1107,7 +1227,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.31"
@@ -1117,7 +1239,9 @@
    "cell_type": "code",
    "execution_count": 88,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1140,7 +1264,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.32"
@@ -1150,7 +1276,9 @@
    "cell_type": "code",
    "execution_count": 89,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1185,7 +1313,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.3"
@@ -1195,7 +1325,9 @@
    "cell_type": "code",
    "execution_count": 90,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1227,7 +1359,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.34"
@@ -1237,7 +1371,9 @@
    "cell_type": "code",
    "execution_count": 91,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1270,7 +1406,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.35"
@@ -1280,7 +1418,9 @@
    "cell_type": "code",
    "execution_count": 92,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1304,7 +1444,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.36"
@@ -1314,7 +1456,9 @@
    "cell_type": "code",
    "execution_count": 93,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1335,7 +1479,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.37"
@@ -1345,7 +1491,9 @@
    "cell_type": "code",
    "execution_count": 94,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1377,7 +1525,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.38"
@@ -1387,7 +1537,9 @@
    "cell_type": "code",
    "execution_count": 95,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1424,7 +1576,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.39"
@@ -1434,7 +1588,9 @@
    "cell_type": "code",
    "execution_count": 96,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1460,7 +1616,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.40"
@@ -1470,7 +1628,9 @@
    "cell_type": "code",
    "execution_count": 97,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1494,7 +1654,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.41"
@@ -1504,7 +1666,9 @@
    "cell_type": "code",
    "execution_count": 114,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1529,7 +1693,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.42"
@@ -1539,7 +1705,9 @@
    "cell_type": "code",
    "execution_count": 99,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1571,7 +1739,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.43"
@@ -1581,7 +1751,9 @@
    "cell_type": "code",
    "execution_count": 116,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1621,7 +1793,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.44"
@@ -1631,7 +1805,9 @@
    "cell_type": "code",
    "execution_count": 101,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1670,7 +1846,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.47"
@@ -1680,7 +1858,9 @@
    "cell_type": "code",
    "execution_count": 102,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1708,7 +1888,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.48"
@@ -1718,7 +1900,9 @@
    "cell_type": "code",
    "execution_count": 103,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1744,7 +1928,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.49"
@@ -1754,7 +1940,9 @@
    "cell_type": "code",
    "execution_count": 104,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1789,7 +1977,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.50"
@@ -1799,7 +1989,9 @@
    "cell_type": "code",
    "execution_count": 106,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1840,7 +2032,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.51"
@@ -1850,7 +2044,9 @@
    "cell_type": "code",
    "execution_count": 107,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1876,7 +2072,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.52"
@@ -1886,7 +2084,9 @@
    "cell_type": "code",
    "execution_count": 108,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -1935,7 +2135,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.53"
@@ -1943,16 +2145,18 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 109,
+   "execution_count": 1,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Voltage just before t=2ms =1.00 mV\n",
+      "Voltage just before t=2ms =1.80 mV\n",
       "(-2.2026841435311137, 'voltage just after t=2ms (mV)')\n",
       "Voltage just after t=2ms =-2.20 mV\n",
       "when t=10ms\n",
@@ -1969,7 +2173,7 @@
     "t=2*10**-3;\n",
     "d=100*10**-12;\n",
     "F=0.1;\n",
-    "el=10.0**3*(d*F*(math.exp(-t/tc))/C);\n",
+    "e1=10.0**3*(d*F*(math.exp(-t/tc))/C);\n",
     "print (\"Voltage just before t=2ms =%.2f mV\" %e1)\n",
     "el_after=10**3*(d*F*(math.exp(-t/tc)-1)/C);\n",
     "print (el_after,'voltage just after t=2ms (mV)')\n",
@@ -1984,7 +2188,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.54"
@@ -1994,7 +2200,9 @@
    "cell_type": "code",
    "execution_count": 110,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -2021,7 +2229,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.55"
@@ -2031,7 +2241,9 @@
    "cell_type": "code",
    "execution_count": 111,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -2056,7 +2268,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.56"
@@ -2066,7 +2280,9 @@
    "cell_type": "code",
    "execution_count": 112,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -2090,7 +2306,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "collapsed": true
+    "collapsed": true,
+    "deletable": true,
+    "editable": true
    },
    "source": [
     "## Exa 2.57"
@@ -2100,7 +2318,9 @@
    "cell_type": "code",
    "execution_count": 113,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "deletable": true,
+    "editable": true
    },
    "outputs": [
     {
@@ -2127,9 +2347,9 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python [Root]",
+   "display_name": "Python 2",
    "language": "python",
-   "name": "Python [Root]"
+   "name": "python2"
   },
   "language_info": {
    "codemirror_mode": {
@@ -2141,7 +2361,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython2",
-   "version": "2.7.12"
+   "version": "2.7.12+"
   }
  },
  "nbformat": 4,