Local minimum and global minimum of a function
显示 更早的评论
Hi!
I need to obtain the first local minimum as well as the global minimum of this function for t>0.
CV_inf = @(T) T.*(4/(n+1)) - (1/2*pi)*integral(psitildasq,(-T),(T),'Arrayvalued',true);
where
psitildasq = @(t) (1/n^2)*sum((cos(x.*t))).^2 + (1/n^2)*sum((sin(x.*t))).^2;
n is the size of vector x.
Beacause fmnbnd and fminsearch may give local minimum of a function, are there other functions that I can use? If so is there an option I could specify to obtain the first local minimum?
Thanks.
1 个评论
Walter Roberson
2015-5-13
Consider moving the n out of psitildasq to speed the integration up. It is acting as a constant multiplier of 1/n^2 on the integral.
Question: do you intend 1/2*pi to be pi/2 or to be 1/(2*pi) ?
采纳的回答
Walter Roberson
2015-5-13
0 个投票
patternsearch() from the Global Optimization Toolbox might be appropriate for the global minimum.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Variables 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
