Hey guys, I just started using matlab. Why is this showing as the function being undefined

Answer 1

[Walter Roberson]

Notice that at the top it still says "Untitled". You have not saved your code into my_equation.m . Also, my_equation compared to myequation matters.

[German Bu]

I thought for sure that would work, but unfortunately it still says undefined after saving the file and calling the function exactly by its name as typed in the editor

[Star Strider]

Are you saving it to a directory on your MATLAB search path?

To find out what the path is, type path in the Command Window.

[German Bu]

I believe so, I saved it into a folder where I have saved mathlab files before

[Walter Roberson]

What does

which -all my_equation

show?

Answer 2

[EngEdgarHS]

1º Try this:

function [x] = myequation(a, b, c)
top = sqrt(b-4*a);
botton = c^7;
x = (b+top)/botton;

2º Save your code in appropriated directory with same name of function (myequation.m)

3º Select folder where myequation.m is saved and try this:

x = myequation(1,2,3);

Regardles.