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Jagdish
Posts:
1
Registered:
10/11/12


Using partial derivatives in Matlab
Posted:
Oct 11, 2012 12:24 PM


Hi,
I am writing a code to implement a function with conditions that involve partial derivatives. The out put is going to be a 3*1 matrix and will involve partial derivatives with all the three parameters. Before I could implement the actual function, I was fiddling around with a simple function as described below with no success. Could you please have a look and let me know if I have made a mistake? I think I am making a rookie mistake that would be trivial to the expert eye. Thanks a lot in advance!
Code 
function resid=case2(x)
syms x1 x2
x1=x(1); x2=x(2);
y=x1^25*x1*x2+3*x2^2;
resid=[diff(y,x1);diff(y,x2)];
end



