First make a substitution and then use integration by parts to evaluate the integral. I will use the equation editor to enter the integral below.

Question

anonymous · Answer

$$\int\limits_{}^{}t^3e ^{-t^2}dt$$

anonymous · Answer

I cannot see the initial substitution I need to make

raden · Answer

the easier way is use the table integration !

anonymous · Answer

what do you mean by that?

raden · Answer

well, i will figure out it for u

raden · Answer

look, not enough good 
sorry :)

anonymous · Answer

Every substitution I try seems to make the question more complicated not less. If you could just help me find the substitution that makes the expression simpler I should be fine from there

raden · Answer

yeah, first we have to use integral by u-subs
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