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-#+LaTeX_CLASS: beamer
-#+LaTeX_CLASS_OPTIONS: [presentation]
-#+BEAMER_FRAME_LEVEL: 1
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-#+LaTeX_CLASS: beamer
-#+LaTeX_CLASS_OPTIONS: [presentation]
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-#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
-#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
-
-#+LaTeX_HEADER: \usepackage{listings}
-
-#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
-#+LaTeX_HEADER:  commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
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-
-#+TITLE: Getting started with arrays
-#+AUTHOR: FOSSEE
-#+EMAIL: info@fossee.in
-#+DATE:    
-
-#+DESCRIPTION: 
-#+KEYWORDS: 
-#+LANGUAGE:  en
-#+OPTIONS:   H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
-#+OPTIONS:   TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
-
-* Outline
-  - Arrays
-    - why arrays over lists
-  - Creating arrays
-  - Array operations
-
-* Overview of Arrays
-  - Arrays are homogeneous data structures.
-    - elements have to the same data type
-  - Arrays are faster compared to lists
-    - at least /80-100 times/ faster than lists
-
-* Creating Arrays
-  - Creating a 1-dimensional array
-  : In []: a1 = array([1, 2, 3, 4])
-  ~[1, 2, 3, 4]~ is a list.
-* Creating two-dimensional array
-  - Creating a 2-dimensional array
-  : In []: a2 = array([[1,2,3,4],[5,6,7,8]])
-  here we convert a list of lists to an array making a 2-d array.
-  - Using ~arange()~ function
-  : In []: ar = arange(1,9)
-* ~reshape()~ method
-  - To reshape an array
-  : In []: ar.reshape(2, 4)
-  : In []: ar.reshape(4, 2)
-  : In []: ar = ar.reshape(2, 4)
-
-* Creating ~array~ from ~list~.
-  - ~array()~ method accepts list as argument
-  - Creating a list
-   : In []: l1 = [1, 2, 3, 4]
-  - Creating an array
-    : In []: a3 = array(l1)
-
-* Exercise 1
-  Create a 3-dimensional array of the order (2, 2, 4).
-
-* ~.shape~ of array
-  - ~.shape~
-    To find the shape of the array
-    : In []: a2.shape
-  - ~.shape~
-    returns a tuple of shape
-* Exercise 2
-  Find out the shape of the other arrays(a1, a3, ar) that we have created.
-* Homogeneous data
-  - All elements in array should be of same type
-    : In []: a4 = array([1,2,3,'a string'])
-* Implicit type casting 
-   : In []: a4
-    All elements are type casted to string type
-* ~identity()~, ~zeros()~ methods
-  - ~identity(n)~
-    Creates an identity matrix, a square matrix of order (n, n) with diagonal elements 1 and others 0.
-  - ~zeros((m, n))~
-    Creates an ~m X n~ matrix with all elements 0.
-
-* Learning exercise
-  - Find out about
-    - ~zeros_like()~
-    - ~ones()~
-    - ~ones_like()~
-
-* Array operations
-  - ~a1 * 2~
-    returns a new array with all elements of ~a1~ multiplied by ~2~.
-    - Similarly ~+~, ~-~ \& ~/~.
-  - ~a1 + 2~
-    returns a new array with all elements of ~a1~ summed with ~2~.
-  - ~a1 += 2~
-    adds ~2~ to all elements of array ~a1~.
-    - Similarly ~-=~, ~*=~ \& ~/=~.
-  - ~a1 + a2~
-    does elements-wise addition.
-    - Similarly ~-~, ~*~ \& ~/~.
-  - ~a1 * a2~
-    does element-wise multiplication
-
-  *Note* - array(A) * array(B) does element wise multiplication and not matrix multiplication
-
-* Summary
-  In this tutorial we covered,
-  - Basics of arrays
-  - Creating arrays
-  - Arrays from lists
-  - Basic array operations
-
-* Thank you!
-#+begin_latex
-  \begin{block}{}
-  \begin{center}
-  This spoken tutorial has been produced by the
-  \textcolor{blue}{FOSSEE} team, which is funded by the 
-  \end{center}
-  \begin{center}
-    \textcolor{blue}{National Mission on Education through \\
-      Information \& Communication Technology \\ 
-      MHRD, Govt. of India}.
-  \end{center}  
-  \end{block}
-#+end_latex
-
-