MATLAB: Finding max points of an inline function

max x and y

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?

Best Answer

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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