# How to make an array of function outputs?

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Carly Hudson on 29 Apr 2020
Commented: darova on 29 Apr 2020
%equation for y
yFunction = @(t) ((4.*t.^3)+(3.*t.^2)+(5.*t)+5);
%Plotting the function
fplot(yFunction,[-10,10]);
I am trying to find the minimum and maximum values of this function and I was wondering if there is a way to make an array of the outputs from the function. Then, with the array I can find the min and max values.
Cheers!

darova on 29 Apr 2020
Try this solution
##### 2 CommentsShowHide 1 older comment
darova on 29 Apr 2020
You are welcome!

### More Answers (1)

David Hill on 29 Apr 2020
If your equations will always be polynomials, then
p=poly([4,3,5,5]);
d=polyder(p);
r=roots(d);
x=polyval(p,r);
relative_min=min(x);
relative_max=max(x);

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