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How to calculate detivative of a function with respect to another function

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Laura Passalacqua
Laura Passalacqua 2020-5-31
编辑： madhan ravi 2020-5-31
Hi! I want to calculate the derivative below in matlab
Have anyone any idea?

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madhan ravi
madhan ravi 2020-5-31
编辑：madhan ravi 2020-5-31
syms u x
subs(diff(u^2 - 1), u, cos(x))

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Alan Stevens
Alan Stevens 2020-5-31
Surely you don't need to do this in Matlab!
Just set u = cos(x), so you have d/du(u^2 - 1) = 2u = 2cos(x)

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