Need help writing this function

Got to write this function for a homework assignment. The function is meant to take in input arguments G,C,w and z and produce the voltage magnitude and phase angle as the output. My professor gave us a general idea of what the function should look like but I am still having trouble figuring out how to write it. Below is what I have so far. Am I missing anything?

function [mag,phase]=bode1(G,C,z,w);  
  f = [0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000];

    a = [1 2 3 4 5 6 7 8 9];

    z = [0.1a a 10a 100a 1000a];

    w0 = 2*pi*f

    x = [v1; v2; v3; v4; v5; v6; v7; v8]; 
    y = x*(w0)

    mag = [];
    phase = [];
    mag[mag abs(x)];
    phase[phase angle(x)]; 
    v = mag(1,;) ; 

    end

[John Chilleri]

Do you have the equations for voltage magnitude and phase angle that the professor wants you to use (in terms of G, C, w, and z)?

[John Chilleri]

Other than my previous comment, you need multiplication signs between your values and a:

z = [0.1a a 10a...

should be

z = [0.1*a a 10*a...

and I'm not sure what to make of your last few lines just yet, but given the equations, I can probably provide some useful hints.

[Justin Goh]

From what I understand, the matrix equation we are dealing with is (G+(jw)c)x=0. My professor didn't provide any other equation.

[John Chilleri]

Do you know what the z is useful for?

[Justin Goh]

I believe z was meant to represent the frequency matrix. I forgot to mention that we were suppose to produce the output voltage at varying frequencies. Also a correction to my last comment. The formula is suppose to be (G+jw(c))x=w. With x being the vector that stores the voltage values. Could I do this: Let A=G + jwC, therefore to find the voltage vector,x : x = A/w ?

[John Chilleri]

That sounds reasonable, assuming (G+jwC) is invertible. But make sure you write

x = A\w

not

x = A/w