Function M-Files Help

2012 10 13
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I am a first time MATLAB user and to be honest, am really struggling. So if anyone could help break this down for me into small, easy steps, it would be very appreciated.
I am trying to create a function m-file. But before I went to the specific problem, I used a test code I found to get the hang of what I was supposed to be doing. (The example was found online and copied down to test).
This is my code:
function y = dude(x)
y = x.^2 + cos(x);
However, MATLAB is telling me there is an invalid statement. It is the exact same code as the example and there are no warnings found in the program. Is there something that I am overlooking?

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Azzi Abdelmalek
Azzi Abdelmalek 2012-10-13

0 个投票

your code is fine, maybe you did'nt call the function correctly
example, to call your function, go to matlab command, then
y = dude(4)
%or
y=dude([1 4 5])

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Annie
Annie 2012-10-13
When I do so, I get the error:
Undefined function 'dude' for input arguments of type 'double'.
Azzi Abdelmalek
Azzi Abdelmalek 2012-10-13
check if your file is saved in your working path

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Annie
Annie 2012-10-13

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When I do so, I get the error:
Undefined function 'dude' for input arguments of type 'double'.

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