finding max points of an inline function?

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baris
baris 2014-12-23
评论： baris 2014-12-23
hi i need to find max x and y points of the inline(y-x-2*x^2-2*x*y-y^2 ). can you help please?

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Sean de Wolski
Sean de Wolski 2014-12-23
First, don't use inline, it's been deprecated; use anonymous functions instead. Next, use fminsearch to find the minimum of the negative of the function.
% x(1) is y, x(2), is x
f = @(x)x(1)-x(2)-2*x(2)^2-2*x(2)*x(1)-x(1)^2
f =
@(x)x(1)-x(2)-2*x(2)^2-2*x(2)*x(1)-x(1)^2
fminsearch(@(x)-f(x),rand(1,2))
ans =
1.5000 -1.0000

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