Convert cartesian coordinates to polar coordinates

Please let me know how to fix my code.

Here is my code so far:

I created a file and named it Cart2polar.m

[r,theta]=cart2polar(x,y)

r=sqrt(x^2+y^2);

theta=atan(y/x);

I created a new live script, then ran it.

[r,theta]=cart2polar(2,2)

Here is the homework prompt:

[KSSV]

Okay...what is the question?

[N/A]

Please scroll down to the colored text (at the bottom). I included a picture of the question.

Answer 1

[Stephan]

Edit your file - you did not declare it as a function, so Matlab uses it as a script. Also think about to vectorize your code, to allow it to accept vector inputs:

function [r,theta]=cart2polar(x,y)
r=sqrt(x.^2+y.^2);
theta=atan(y./x);
end

[N/A]

What do I do now? I inputted this, clicked run, and nothing happened.

[Stephan]

Save the filein your working directory and close it. Then open another script or use the command line with the call of the function like you already did correctly:

[r,theta]=cart2polar(2,2)

The idea behind a function is, that once it is written in can always be called from command line, another function or a script just by using the correct input arguments and in your case 2 output arguments that it returns when it was called correctly.

[N/A]

I got it to work. :)