How do I approach this problem?

My matlab instructor didn't thoroughly teach us how to operate matlab effectively so Im kind of struggling to understand how to format and approach matlab questions. Here is one we had from an older lab:

For the following two functions, plot (a) The real and imaginary parts on same axes versus angle a in radians (b) The polar plot of the magnitude of G1 and G2 versus the input angle A (c) The polar plot of the magnitude of G1 and G2 versus the output angle of G (given by angle(G1) not equivalent to angle A).

G1 = 3*(1-(cos(A))^2 + j*sin(A^2))

G2 = 8*A*(1+j*sin(0.5*A)Acos(-2*A)+exp(-A^3))

Since this is an old lab, please don't hesitate to walk me through the steps. I really want to be able to work these problems and program effectively.

Thanks in advance :)

[James Tursa]

What have you done so far? Do you know how to get the real and imaginary parts of a variable? Do you know how to get the angle? Do you know how to plot? Typically, we expect the user to post their attempt and then we can comment on it and make suggestions.

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer