Differentiation Of A Function.

Hi,

Can anyone help me out regarding the following problem on differentiation in Matlab as soon as possible: I have a symbolic function, S=sqrt(8).*(3.*X.^3+3.*Y.^2.*X-2.*X). I need to differentiate this w.r.t X and then Y.After that substitute both the value of X and Y to get the value of the differentiation where X and Y varies from -1 to +1 in steps of 128.(i.e.,X=-1:2/127:+1,Y=-1:2/127:+1) Thanking You!

[Walter Roberson]

Duplicate is at http://www.mathworks.com/matlabcentral/answers/25738-differentiation-of-a-function

[Walter Roberson]

What was wrong with Andrew's answer in your previous copy of this same question?

Answer 1

[Andrei Bobrov]

Hi Pranjal! My answer here.