$\text { Find } f ^ { tt} ( x ) \text { if } f ( x ) = ( 7 + 4 x ) e ^ { - 4 x }$
A) $f ^ { tt } ( x ) = - 80 ( 7 + 4 x ) e ^ { - 4 x }$
B) $f ^ { tt } ( x ) = ( - 80 - 64 x ) e ^ { - 4 x }$
C) $f ^ { tt} ( x ) = - ( 24 + 16 x ) e ^ { - 4 x }$
D) $f ^ { tt} ( x ) = ( 80 - 64 x ) e ^ { - 4 x }$
E) $f ^ { tt } ( x ) = ( 80 + 64 x ) e ^ { - 4 x }$

Question

$\text { Find } f ^ { tt} ( x ) \text { if } f ( x ) = ( 7 + 4 x ) e ^ { - 4 x }$ 
A) $f ^ { tt } ( x ) = - 80 ( 7 + 4 x ) e ^ { - 4 x }$
B) $f ^ { tt } ( x ) = ( - 80 - 64 x ) e ^ { - 4 x }$
C) $f ^ { tt} ( x ) = - ( 24 + 16 x ) e ^ { - 4 x }$
D) $f ^ { tt} ( x ) = ( 80 - 64 x ) e ^ { - 4 x }$
E) $f ^ { tt } ( x ) = ( 80 + 64 x ) e ^ { - 4 x }$

Quizplus · Accepted Answer

The Answer of $\text { Find } f ^ { tt} ( x ) \text { if } f ( x ) = ( 7 + 4 x ) e ^ { - 4 x }$ 
A) $f ^ { tt } ( x ) = - 80 ( 7 + 4 x ) e ^ { - 4 x }$
B) $f ^ { tt } ( x ) = ( - 80 - 64 x ) e ^ { - 4 x }$
C) $f ^ { tt} ( x ) = - ( 24 + 16 x ) e ^ { - 4 x }$
D) $f ^ { tt} ( x ) = ( 80 - 64 x ) e ^ { - 4 x }$
E) $f ^ { tt } ( x ) = ( 80 + 64 x ) e ^ { - 4 x }$

Find ftt(x) if f(x)=(7+4x)e−4x\text { Find } f ^ { tt} ( x ) \text { if } f ( x ) = ( 7 + 4 x ) e ^ { - 4 x } Find ftt(x) if f(x)=(7+4x)e−4x

$\text { Find } f ^ { tt} ( x ) \text { if } f ( x ) = ( 7 + 4 x ) e ^ { - 4 x }$