Basic plotting (no, not conniving)
If x and y are two arrays with the same number of elements, plot(x,y) draws a plot of x (horizontal) vs y (vertical)
x = linspace(0, 4*pi, 250);
Normally the graph is scaled so the full range of x and y values fill the plot. To have equal spacing on the axes, enter
after the plot has been drawn (using straight quote marks).
You can label the axes and title the graph after it has been drawn:
title(�A Fabulous Graph�)