Hey, can you show me how to do the integral for this question

(t^2)(e^(-t^3)

Thanks

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- Apr 6th 2009, 09:11 PMMudd_101Integral Help!
Hey, can you show me how to do the integral for this question

(t^2)(e^(-t^3)

Thanks - Apr 6th 2009, 09:20 PMChris L T521
- Apr 6th 2009, 09:32 PMMudd_101
I almost got the answer but I'm negative off uhh I put my steps down their if you could Pleaassse look at them but uhh I'm new to integrals so I think they will be difficult to follow cuz I don't really know what I'm doing.

okay so I have t^2 e^u

u = -t^3

-3t^2 dt = du

t^2 dt= (-1/3)du

so then I have: (-1/3)du *e^u

then I did the integral of e^u (leaving behind the -1/3 from the du)

(-1/3) ((e^(-t^3))/(-1))

The answer in my text is (-1/3)((e^(-t^3)) - Apr 6th 2009, 09:45 PMChris L T521
- Apr 6th 2009, 09:55 PMMudd_101
ooo thanks