Assignment 1
Write a script to plot a sine wave from minus two pi to two pi.

Assignment 2
Which among this is correct ?
        from scipy import plot
        from numpy import plot
        from matplotlib import plot
        from pylab import plot

Which among these libraries is part of python standard library ?
        Mayavi
        scipy
        matplotlib
        urllib2

Functions xlim() and ylim() can be imported to the current name-space as,
        from pylab import xlim, ylim
        import pylab
        from scipy import xlim, ylim
        import scipy