fminsearch with 3 variables

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Jens Petit-jean 2021-2-28

评论： Jens Petit-jean 2021-2-28

Hello,

How do I use fminsearch for a equation with 3 variables?

f(x,y,z)=1-(x-1)^(2) * (y-1.7)^(2) - (y-1.5)^(2) * (z-2.1)^2

I thought something like this :

fun=@(x,y,z) 1-(x-1).^(2).*(y-1.7)^(2)-(y-1.5)^(2)*(z-2.1).^2

fminsearch(fun,[0,0,3]) (with (0,0,3) a random point)

but I always got the message "Not enough input arguments"

Thanks in advance!

Walter Roberson 2021-2-28

example

f=@(v)v(1).*v(2)-sin(v(1)+v(2))

Instead of

f=@(x,y)x.*y-sin(x+y)

Jens Petit-jean 2021-2-28

thanks!

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