Updated day1 session1.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Tutorial slides on Python.
%
% Author: Prabhu Ramachandran <prabhu at aero.iitb.ac.in>
% Copyright (c) 2005-2009, Prabhu Ramachandran
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass[14pt,compress]{beamer}
%\documentclass[draft]{beamer}
%\documentclass[compress,handout]{beamer}
%\usepackage{pgfpages}
%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
% Modified from: generic-ornate-15min-45min.de.tex
\mode<presentation>
{
\usetheme{Warsaw}
\useoutertheme{infolines}
\setbeamercovered{transparent}
}
\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
%\usepackage{times}
\usepackage[T1]{fontenc}
% Taken from Fernando's slides.
\usepackage{ae,aecompl}
\usepackage{mathpazo,courier,euler}
\usepackage[scaled=.95]{helvet}
\definecolor{darkgreen}{rgb}{0,0.5,0}
\usepackage{listings}
\lstset{language=Python,
basicstyle=\ttfamily\bfseries,
commentstyle=\color{red}\itshape,
stringstyle=\color{darkgreen},
showstringspaces=false,
keywordstyle=\color{blue}\bfseries}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Macros
\setbeamercolor{emphbar}{bg=blue!20, fg=black}
\newcommand{\emphbar}[1]
{\begin{beamercolorbox}[rounded=true]{emphbar}
{#1}
\end{beamercolorbox}
}
\newcounter{time}
\setcounter{time}{0}
\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
\newcommand{\typ}[1]{\texttt{#1}}
\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} }
%%% This is from Fernando's setup.
% \usepackage{color}
% \definecolor{orange}{cmyk}{0,0.4,0.8,0.2}
% % Use and configure listings package for nicely formatted code
% \usepackage{listings}
% \lstset{
% language=Python,
% basicstyle=\small\ttfamily,
% commentstyle=\ttfamily\color{blue},
% stringstyle=\ttfamily\color{orange},
% showstringspaces=false,
% breaklines=true,
% postbreak = \space\dots
% }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Title page
\title[Exercises]{Exercises}
\author[FOSSEE] {FOSSEE}
\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
\date[] {1, November 2009\\Day 2}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\pgfdeclareimage[height=0.75cm]{iitmlogo}{iitmlogo}
%\logo{\pgfuseimage{iitmlogo}}
%% Delete this, if you do not want the table of contents to pop up at
%% the beginning of each subsection:
\AtBeginSubsection[]
{
\begin{frame}<beamer>
\frametitle{Outline}
\tableofcontents[currentsection,currentsubsection]
\end{frame}
}
% If you wish to uncover everything in a step-wise fashion, uncomment
% the following command:
%\beamerdefaultoverlayspecification{<+->}
%\includeonlyframes{current,current1,current2,current3,current4,current5,current6}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% DOCUMENT STARTS
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\begin{frame}{Problem 1.1}
The aliquot of a number is defined as: the sum of the \emph{proper} divisors of the number. For example, aliquot(12) = 1 + 2 + 3 + 4 + 6 = 16.\\
Write a function that returns the aliquot number of a given number.
\end{frame}
\begin{frame}{Problem 1.2}
A pair of numbers (a, b) is said to be \alert{amicable} if the aliquot number of a is b and the aliquot number of b is a.\\
Example: \texttt{220, 284}\\
Write a program that prints all four digit amicable pairs.
\inctime{20}
\end{frame}
%% \begin{frame}{Problem 2}
%% Given an empty chessboard and one Bishop placed in any s%quare, say (r, c), generate the list of all squares the Bi%shop could move to.
%% \end{frame}
\begin{frame}[fragile]
\frametitle{Problem Set 2}
Given a string like, ``1, 3-7, 12, 15, 18-21'', produce the list \\
\begin{lstlisting}
[1,3,4,5,6,7,12,15,18,19,20,21]
\end{lstlisting}
\inctime{10}
\end{frame}
\begin{frame}
\frametitle{Problem Set 3}
\begin{description}
\item[3.1] Count word frequencies in a file.
\end{description}
\inctime{5}
\end{frame}
\begin{frame}[fragile]
\frametitle{Problem set 4}
Central difference
\begin{equation*}
\frac{sin(x+h)-sin(x-h)}{2h}
\end{equation*}
\begin{lstlisting}
In []: x = linspace(0, 2*pi, 100)
In []: y = sin(x)
In []: deltax = x[1] - x[0]
\end{lstlisting}
\pause
\begin{enumerate}
\item Given this, get the finite difference of sin in the range 0 to 2*pi
\end{enumerate}
\end{frame}
\begin{frame}
\frametitle{Problem Set 5}
\begin{itemize}
\item[5.1] Write a function that plots any regular n-gon given \typ{n}.
\item[5.2] Consider the logistic map, $f(x) = kx(1-x)$, plot it for
$k=2.5, 3.5$ and $4$ in the same plot.
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{Problem Set 5}
\begin{columns}
\column{0.6\textwidth}
\small{
\begin{itemize}
\item[3] Consider the iteration $x_{n+1} = f(x_n)$ where $f(x) = kx(1-x)$. Plot the successive iterates of this process as explained below.
\end{itemize}}
\column{0.35\textwidth}
\hspace*{-0.5in}
\includegraphics[height=1.6in, interpolate=true]{data/cobweb}
\end{columns}
\end{frame}
\begin{frame}
\frametitle{Problem Set 5.3}
Plot the cobweb plot as follows:
\begin{enumerate}
\item Start at $(x_0, 0)$ ($\implies$ i=0)
\item Draw a line to $(x_i, f(x_i))$
\item Set $x_{i+1} = f(x_i)$
\item Draw a line to $(x_{i+1}, x_{i+1})$
\item $(i\implies i+1)$
\item Repeat from 2 for as long as you want
\end{enumerate}
\inctime{20}
\end{frame}
\end{document}