Question

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.

Answer 1

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

Answer 2

I cannot see the initial substitution I need to make

Answer 3

the easier way is use the table integration !

Answer 4

what do you mean by that?

Answer 5

well, i will figure out it for u

Answer 6

look, not enough good
sorry :)

Answer 7

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

Answer 8

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