MATLAB: Differentiation Of A Function.

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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!

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Hi Pranjal! My answer here.

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MATLAB: Differentiation Of A Function.

syms X Y real
S=sqrt(8).*(3.*X.^3+3.*Y.^2.*X-2.*X);
F = jacobian(S,[X,Y]);
Fun = arrayfun(@(i1)matlabFunction(F(i1)),1:2,'un',0);

solution

[x,y] = meshgrid(linspace(-1,1,128));
p = cellfun(@(z)z(x,y),Fun,'un',0);
[dSdx,dSdy] =p{:};

MATLAB: How to find the derivative of a function?And then plot the derivatives

https://www.mathworks.com/help/symbolic/diff.html

https://www.mathworks.com/help/matlab/ref/fplot.html

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MATLAB: Differentiation Of A Function.

MATLAB: How to find the derivative of a function?And then plot the derivatives

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