Question: Let u be a differentiable function of x, in exercise 123, the following result is proved. u dax [u = u' , u * 0.

Let u be a differentiable function of x, in exercise 123, the following result is proved. u dax [u = u' , u * 0. Use this result to find the derivative of the function. h(x) = 17x|cos(9x) h ' ( x ) = X

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