MATLAB: Looping question

functionsloop

Hi, I have a question regarding using loop for a function file. For example, let func represent a function file, where f = x^2 – 1 and f is the output argument and x is the input argument.
Now, my x = 1:100. and now for i = 1:100 z(i) = func(x(i)); end
f_n = min(f).
My question: Is there a way where I can identify the particular x for which f_n is giving out the value for?
Thanks, Mahesh Ramaraj.

Best Answer

No reason for loops!
 x = 1:100; %x vector
 func = @(x)x.^2-1; %function to apply
 [the_min, idx] = min(func(x)); %find the minimum and index of minimum
 min_x = x(idx); %extract x corresponding to the minimum of f(x)
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