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 Find the derivative of the function f(x)=x5−9x4. \text { Find the derivative of the function } f ( x ) = \frac { x ^ { 5 } - 9 } { x ^ { 4 } } \text {. }

Question 87

Multiple Choice

 Find the derivative of the function f(x) =x5−9x4. \text { Find the derivative of the function } f ( x ) = \frac { x ^ { 5 } - 9 } { x ^ { 4 } } \text {. }


A) ft(x) =1+36x5f ^ { t } ( x ) = 1 + \frac { 36 } { x ^ { 5 } }
B) ft(x) =1−36x5f ^ { t } ( x ) = 1 - \frac { 36 } { x ^ { 5 } }
C) ft(x) =1+4x5f ^ { t} ( x ) = 1 + \frac { 4 } { x ^ { 5 } }
D) ft(x) =1−9x5f ^ { t } ( x ) = 1 - \frac { 9 } { x ^ { 5 } }
E) ft(x) =1+9x5f ^ {t } ( x ) = 1 + \frac { 9 } { x ^ { 5 } }

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