Changes made during REC Chennai workshop.
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% Tutorial slides on Python.
%
% Author: FOSSEE <info at fossee dot in>
% Copyright (c) 2005-2009, FOSSEE Team
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keywordstyle=\color{blue}\bfseries}
\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} }
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% Macros
\newcounter{qno}
\setcounter{qno}{0}
\newcommand{\incqno}{\addtocounter{qno}{1}{Question \theqno}}
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% Title page
\title[Basic Python]{Python for science and engineering: Day 1, Quiz 2}
\author[FOSSEE Team] {FOSSEE}
\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
\date[] {\today \\
Day 1, quiz 2}
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\begin{document}
\begin{frame}
\titlepage
\end{frame}
\begin{frame}
\frametitle{Write your details...}
On the top right hand corner please write down the following:
\begin{itemize}
\item Name:
\item University/College/Company:
\item Student/Teacher/Professional:
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{\incqno }
\begin{lstlisting}
In []: a = array([[1, 2],
[3, 4]])
In []: a[1,0] = 0
\end{lstlisting}
What is the resulting array?
\end{frame}
\begin{frame}[fragile]
\frametitle{\incqno }
\begin{lstlisting}
In []: x = array(([1,2,3,4],
[2,3,4,5]))
In []: x[-2][-3] = 4
In []: print x
\end{lstlisting}
What will be printed?
\end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% \begin{lstlisting}
%% In []: x = array([[1,2,3,4],
%% [3,4,2,5]])
%% \end{lstlisting}
%% What is the \lstinline+shape+ of this array?
%% \end{frame}
\begin{frame}[fragile]
\frametitle{\incqno }
\begin{lstlisting}
In []: x = array([[1,2,3,4]])
\end{lstlisting}
How to change \lstinline+x+ to \lstinline+array([[1,2,0,4]])+?
\end{frame}
\begin{frame}[fragile]
\frametitle{\incqno }
\begin{lstlisting}
In []: x = array([[1,2,3,4],
[3,4,2,5]])
\end{lstlisting}
How do you get the following slice of \lstinline+x+?
\begin{lstlisting}
array([[2,3],
[4,2]])
\end{lstlisting}
\end{frame}
\begin{frame}[fragile]
\frametitle{\incqno }
\begin{lstlisting}
In []: x = array([[9,18,27],
[30,60,90],
[14,7,1]])
\end{lstlisting}
What is the output of \lstinline+x[::3,::3]+
\end{frame}
\begin{frame}[fragile]
\frametitle{\incqno }
\begin{lstlisting}
In []: a = array([[1, 2],
[3, 4]])
\end{lstlisting}
How do you get the transpose of this array?
\end{frame}
\begin{frame}[fragile]
\frametitle{\incqno }
\begin{lstlisting}
In []: a = array([[1, 2],
[3, 4]])
In []: b = array([[1, 1],
[2, 2]])
In []: a*b
\end{lstlisting}
What does this produce?
\end{frame}
\begin{frame}
\frametitle{\incqno }
What command do you use to find the inverse of a matrix and its
eigenvalues?
\end{frame}
%% \begin{frame}
%% \frametitle{\incqno }
%% The file \lstinline+datafile.txt+ contains 3 columns of data. What
%% command will you use to read the entire data file into an array?
%% \end{frame}
%% \begin{frame}
%% \frametitle{\incqno }
%% If the contents of the file \lstinline+datafile.txt+ is read into an
%% $N\times3$ array called \lstinline+data+, how would you obtain the third
%% column of this data?
%% \end{frame}
\begin{frame}
\frametitle{\incqno }
Given a 4x4 matrix \texttt{A} and a 4-vector \texttt{b}, what command do
you use to solve for the equation \\
\texttt{Ax = b}?
\end{frame}
\begin{frame}
\frametitle{\incqno }
What command will you use if you wish to integrate a system of ODEs?
\end{frame}
\begin{frame}
\frametitle{\incqno }
How do you calculate the roots of the polynomial, $y = 1 + 6x + 8x^2 +
x^3$?
\end{frame}
\begin{frame}
\frametitle{\incqno }
Two arrays \lstinline+a+ and \lstinline+b+ are numerically almost equal, what command
do you use to check if this is true?
\end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% \begin{lstlisting}
%% In []: x = arange(0, 1, 0.25)
%% In []: print x
%% \end{lstlisting}
%% What will be printed?
%% \end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% \begin{lstlisting}
%% from scipy.integrate import quad
%% def f(x):
%% res = x*cos(x)
%% quad(f, 0, 1)
%% \end{lstlisting}
%% What changes will you make to the above code to make it work?
%% \end{frame}
%% \begin{frame}
%% \frametitle{\incqno }
%% What two commands will you use to create and evaluate a spline given
%% some data?
%% \end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% What would be the result?
%% \begin{lstlisting}
%% In []: x
%% array([[0, 1, 2],
%% [3, 4, 5],
%% [6, 7, 8]])
%% In []: x[::-1,:]
%% \end{lstlisting}
%% Hint:
%% \begin{lstlisting}
%% In []: x = arange(9)
%% In []: x[::-1]
%% array([8, 7, 6, 5, 4, 3, 2, 1, 0])
%% \end{lstlisting}
%% \end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% What would be the result?
%% \begin{lstlisting}
%% In []: y = arange(3)
%% In []: x = linspace(0,3,3)
%% In []: x-y
%% \end{lstlisting}
%% \end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% \begin{lstlisting}
%% In []: x
%% array([[ 0, 1, 2, 3],
%% [ 4, 5, 6, 7],
%% [ 8, 9, 10, 11],
%% [12, 13, 14, 15]])
%% \end{lstlisting}
%% How will you get the following \lstinline+x+?
%% \begin{lstlisting}
%% array([[ 5, 7],
%% [ 9, 11]])
%% \end{lstlisting}
%% \end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% What would be the output?
%% \begin{lstlisting}
%% In []: y = arange(4)
%% In []: x = array(([1,2,3,2],[1,3,6,0]))
%% In []: x + y
%% \end{lstlisting}
%% \end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% \begin{lstlisting}
%% In []: line = plot(x, sin(x))
%% \end{lstlisting}
%% Use the \lstinline+set_linewidth+ method to set width of \lstinline+line+ to 2.
%% \end{frame}
%% \begin{frame}[fragile]
%% \frametitle{\incqno }
%% What would be the output?
%% \begin{lstlisting}
%% In []: x = arange(9)
%% In []: y = arange(9.)
%% In []: x == y
%% \end{lstlisting}
%% \end{frame}
\end{document}