Defining a symbolic function using the "diff" command

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Ahmed
Ahmed 2013-10-10
评论： Ahmed 2013-10-10
I have a function, say
Function=@ (x) x^2
I want to differentiate this function using the Diff command:
diff(Function,x,1)
and then save the output derivative function as a new function called FunctionDerv
so it will be the same as saying:
FunctionDerv= @ (x) 2x

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Walter Roberson
Walter Roberson 2013-10-10
Function=@ (x) x^2 would be an anonymous function, not a symbolic function. None the less, you could use
syms x
sym_Function = Function(x);
sym_FunctionDerv = diff(sym_Function, x);
FunctionDerv = matlabFunction(sym_FunctionDerv);

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