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Let f(x)=x4exf ( x ) = \frac { x ^ { 4 } } { e ^ { x } }

Question 97

Multiple Choice

Let f(x) =x4exf ( x ) = \frac { x ^ { 4 } } { e ^ { x } } Then f(x) f ^ { \prime } ( x ) is


A) 4x3ex\frac { 4 x ^ { 3 } } { e ^ { x } }
B) x4ex\frac { x ^ { 4 } } { e ^ { x } }
C) x3(4x) ex\frac { x ^ { 3 } ( 4 - x ) } { e ^ { x } }
D) x3(4x) e2x\frac { x ^ { 3 } ( 4 - x ) } { e ^ { 2 x } }
E) x43ex\frac { x ^ { 4 } - 3 } { e ^ { x } }

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