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How do I minimize a function

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akhila k
akhila k on 23 May 2018
Commented: Ameer Hamza on 23 May 2018
I got an 8th degree equation for a curve through curve fitting toolbox and I have to Minimize it. So how would I understand what parameters are chosen or what kind of function to choose for a particular equation.

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Accepted Answer

Majid Farzaneh
Majid Farzaneh on 23 May 2018
Hi, You can use genetic algorithm (ga) like this:
[x, Fval]=ga(@(x) your_fcn(x), N)
N is number of variables in your function. The output contains x (your optimum values for your variables) and Fval (minimum value provided by optimum x). If you have constrains try
help ga
Also you can use fmincon. Try
help fmincon

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Ameer Hamza
Ameer Hamza on 23 May 2018
I would suggest using fmincon. Since the estimated function is an analytical so fmincon will be able to quickly and more accurately estimate the minima.

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