How to get fminsearch values for 3 parameters

I want to get the values of 3 parameters usring fminsearch

for count = 1 : 25 %loop to generate 25 trials
    % For Fminsearch
        initguess=[1,2]+rand(1,2);
        options=optimset('MaxIter',2000,'MaxFunEvals',2000);
        [c(count,:),fmin(count,:)]=fminsearch(OFVL,initguess,options);
end

Answer 1

[Walter Roberson]

Widen your initguess to be a vector of length 3 instead of a vector of length 2.

[Josiah Jarenee Comia]

is it like this?

initguess=[1,3]+rand(1,3);

[Josiah Jarenee Comia]

i understand now, it should be initguess=[1,2,3]

[Walter Roberson]

initguess = [1.6, 3.8, -1.2] + rand(1,3)

or similar. The [1.6, 3.8, -1.2] part should be the initial point that you want to choose random points "near". The rand(1,3) should be designed to move meaningfully around the range -- so in some cases you might come out with something like

initguess = [1.6, 3.8, -1.2] + randn(1,3) * 5;

To emphasize, the [1.6, 3.8, -1.2] are purely example values to show you how it is done. The (1,3) on the other hand is the size of the random number to be generated, 1 row and 3 columns.

[Josiah Jarenee Comia]

I understand it more clearly now. Thank you sir!