## anonymous 5 years ago How about the derivitive of ((-722t^2)/((19t^2)^2)+(49e^-7t)-128sin(8t).. any help there

1. anonymous

$-e ^{-7}*(1024*e ^{7}*t ^{3}*\cos(8*t)-49*t ^{3}-4*e ^{7}/t ^{3}$

2. anonymous

is your professor insane. Those are some big numbers on top of an already complex derivative

3. anonymous

i agree lol

4. anonymous

though i think he just tried to derive it several times thats possibly why it got a little messy or...webassign tends to be evil like that