A function is given by

MATHEMATICS · Subjective · AP · Calculus AB · Differentiation: Definition and Fundamental Properties · Differentiation: Definition and Fundamental Properties

Problem

A function FF is given by F(x)=CxrF(x) = C x^{r}, with constants C>0C > 0 and r>0r > 0. It is known that F′(1)=6F'(1) = 6 and F′(3)=54F'(3) = 54. Determine rr.

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