day1/day1quiz2.tex
author Puneeth Chaganti <punchagan@gmail.com>
Thu, 09 Dec 2010 18:39:26 +0530
branchscipyin2010
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Changed session-2 - now uses loadtxt.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Tutorial slides on Python.
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%
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% Author: FOSSEE <info at fossee  dot in>
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% Copyright (c) 2005-2009, FOSSEE Team
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\documentclass[14pt,compress]{beamer}
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\mode<presentation>
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{
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  \useoutertheme{split}
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  \setbeamercovered{transparent}
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}
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\definecolor{darkgreen}{rgb}{0,0.5,0}
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\usepackage{listings}
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\lstset{language=Python,
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    basicstyle=\ttfamily\bfseries,
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    commentstyle=\color{red}\itshape,
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  stringstyle=\color{darkgreen},
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  showstringspaces=false,
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  keywordstyle=\color{blue}\bfseries}
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\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}}  }
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Macros
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\newcounter{qno}
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\setcounter{qno}{0}
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\newcommand{\incqno}{\addtocounter{qno}{1}{Question \theqno}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Title page
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\title[Basic Python]{Python for science and engineering: Day 2, Quiz 1}
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\author[FOSSEE Team] {FOSSEE}
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\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
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\date[] {\today \\
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Day 1, quiz 2}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{document}
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\begin{frame}
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  \titlepage
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\end{frame}
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\begin{frame}
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  \frametitle{Write your details...}
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On the top right hand corner please write down the following:
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  \begin{itemize}
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    \item Name:
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    \item University/College/Company:
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    \item Student/Teacher/Professional:
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    \item Field of interest/study:
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  \end{itemize}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{\incqno }
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\begin{lstlisting}
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In []: a = array([[1, 2],
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                  [3, 4]])
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In []: a[1,0] = 0
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\end{lstlisting}
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What is the resulting array?
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{\incqno }
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\begin{lstlisting}
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  In []: x = array(([1,2,3,4],
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                    [2,3,4,5]))
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  In []: x[-2][-3] = 4
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  In []: print x
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\end{lstlisting}
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What will be printed?
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{\incqno }
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\begin{lstlisting}
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  In []: x = array([[1,2,3,4],
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                    [3,4,2,5]])
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\end{lstlisting}
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What is the \lstinline+shape+ of this array?
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{\incqno }
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\begin{lstlisting}
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  In []: x = array([[1,2,3,4]])
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\end{lstlisting}
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How to change \lstinline+x+ to \lstinline+array([[1,2,0,4]])+?
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{\incqno }
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\begin{lstlisting}
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  In []: x = array([[1,2,3,4],
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                    [3,4,2,5]])
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\end{lstlisting}
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How do you get the following slice of \lstinline+x+?
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\begin{lstlisting}
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array([[2,3],
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       [4,2]])
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\end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{\incqno }
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\begin{lstlisting}
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  In []: x = array([[9,18,27],
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                    [30,60,90],
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                    [14,7,1]])
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\end{lstlisting}
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What is the output of \lstinline+x[::3,::3]+
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{\incqno }
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\begin{lstlisting}
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In []: a = array([[1, 2],
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                  [3, 4]])
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\end{lstlisting}
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How do you get the transpose of this array?
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{\incqno }
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\begin{lstlisting}
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In []: a = array([[1, 2],
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                  [3, 4]])
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In []: b = array([[1, 1],
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                  [2, 2]])
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In []: a*b
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\end{lstlisting}
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What does this produce?
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\end{frame}
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\begin{frame}
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\frametitle{\incqno }
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What command do you use to find the inverse of a matrix and its
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eigenvalues?
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\end{frame}
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%% \begin{frame}
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%% \frametitle{\incqno }
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%% The file \lstinline+datafile.txt+ contains 3 columns of data.  What
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%% command will you use to read the entire data file into an array?
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%% \end{frame}
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%% \begin{frame}
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%% \frametitle{\incqno }
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%% If the contents of the file \lstinline+datafile.txt+ is read into an
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%% $N\times3$ array called \lstinline+data+, how would you obtain the third
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%% column of this data?
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%% \end{frame}
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\begin{frame}
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\frametitle{\incqno }
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Given a 4x4 matrix \texttt{A} and a 4-vector \texttt{b}, what command do
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you use to solve for the equation \\
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\texttt{Ax = b}?
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\end{frame}
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379
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%% \begin{frame}
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%% \frametitle{\incqno }
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%% What command will you use if you wish to integrate a system of ODEs?
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%% \end{frame}
354
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\begin{frame}
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\frametitle{\incqno }
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How do you calculate the roots of the polynomial, $y = 1 + 6x + 8x^2 +
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x^3$?
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\end{frame}
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\begin{frame}
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\frametitle{\incqno }
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Two arrays \lstinline+a+ and \lstinline+b+ are numerically almost equal, what command
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do you use to check if this is true?
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\end{frame}
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%% \begin{frame}[fragile]
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%% \frametitle{\incqno }
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%% \begin{lstlisting}
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%%   In []: x = arange(0, 1, 0.25)
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%%   In []: print x
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%% \end{lstlisting}
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%% What will be printed?
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%% \end{frame}
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%% \begin{frame}[fragile]
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%% \frametitle{\incqno }
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%% \begin{lstlisting}
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%% from scipy.integrate import quad
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%% def f(x):
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%%     res = x*cos(x)
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%% quad(f, 0, 1)
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%% \end{lstlisting}
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%% What changes will you make to the above code to make it work?
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%% \end{frame}
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%% \begin{frame}
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%% \frametitle{\incqno }
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%% What two commands will you use to create and evaluate a spline given
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%% some data?
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%% \end{frame}
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%% \begin{frame}[fragile]
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%% \frametitle{\incqno }
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%% What would be the result?
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%% \begin{lstlisting}
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%%   In []: x
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%%   array([[0, 1, 2],
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%%          [3, 4, 5],
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%%          [6, 7, 8]])
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%%   In []: x[::-1,:]
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%% \end{lstlisting}
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%% Hint:
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%% \begin{lstlisting}
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%%   In []: x = arange(9)
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%%   In []: x[::-1]
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%%   array([8, 7, 6, 5, 4, 3, 2, 1, 0])
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%% \end{lstlisting}
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%% \end{frame}
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%% \begin{frame}[fragile]
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%% \frametitle{\incqno }
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%% What would be the result?
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%% \begin{lstlisting}
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%%   In []: y = arange(3)
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%%   In []: x = linspace(0,3,3)
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%%   In []: x-y
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%% \end{lstlisting}
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%% \end{frame}
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%% \begin{frame}[fragile]
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%% \frametitle{\incqno }
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%% \begin{lstlisting}
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%%   In []: x
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%%   array([[ 0, 1, 2, 3],
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%%          [ 4, 5, 6, 7],
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%%          [ 8, 9, 10, 11],
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%%          [12, 13, 14, 15]])
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%% \end{lstlisting}
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%% How will you get the following \lstinline+x+?
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%% \begin{lstlisting}
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%%   array([[ 5, 7],
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%%          [ 9, 11]])
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%% \end{lstlisting}
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%% \end{frame}
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%% \begin{frame}[fragile]
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%% \frametitle{\incqno }
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%% What would be the output?
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%% \begin{lstlisting}
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%%   In []: y = arange(4)
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%%   In []: x = array(([1,2,3,2],[1,3,6,0]))
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%%   In []: x + y
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%% \end{lstlisting}
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%% \end{frame}
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%% \begin{frame}[fragile]
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%% \frametitle{\incqno }
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%% \begin{lstlisting}
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%%   In []: line = plot(x, sin(x))
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%% \end{lstlisting}
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%% Use the \lstinline+set_linewidth+ method to set width of \lstinline+line+ to 2.
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%% \end{frame}
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%% \begin{frame}[fragile]
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%% \frametitle{\incqno }
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%% What would be the output?
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%% \begin{lstlisting}
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%%   In []: x = arange(9)
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%%   In []: y = arange(9.)
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%%   In []: x == y
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%% \end{lstlisting}
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%% \end{frame}
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adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
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\end{document}
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