Derivative of the function

Hi all, I have question about derivation of function. I have function f=x^2(t)+u(t) and need derivation through t, not x or u. In which way it is possible to solve by Matlab ? ode or myfun function ? Or an easier way ? (I am solving variance method)

Thanks

Answer 1

[Wayne King]

syms x t
u = 3*cos(t);
diff(x^(2*t)+u,t)

Answer 2

[Jan]

Do you look for a symbolical or numerical solution? For a numerical solution, do you want a rough discrete estimation as by gradient or a more expensive adaptive method like e.g.:

http://www.mathworks.com/matlabcentral/fileexchange/13490-adaptive-robust-numerical-differentiation

http://www.mathworks.com/matlabcentral/fileexchange/18176-complex-step-jacobian

[Maros Maros]

Thanks,I need solve it numerical, partial derivation and it looks be very helpful.

I am going to check it.

Thank you very much