Create a simple graph in Python and Matlab

Python examples: 

With arange (use the form start,end,step):

arange documentation:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.arange.html#numpy.arange

With linespace

linespace documentation:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.linspace.html

Matlab examples:

Creating a vector of values (form start:step:end)

With linespace