Gradient of a function

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DIEGO FOSSO
DIEGO FOSSO 2015-7-15
回答： Star Strider 2015-7-15
Hi, I need to express the gradient of a function (not calculate its but only write its)
For example, if we have the function f(x(1),x(2)) = x(1)+x(2)^2 we know the gradient is grad= [1,2*x(2) ].
The problem is that I can't write vectors whose elements are math functions with variables. Can anyone help me?? PS I need to solve this problem because I have to run the istruction feval(grad, x(1), x(2)) of an m.file I need to run.

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回答（1 个）

Star Strider
Star Strider 2015-7-15
Have you considered the gradient function?

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