- #1
afcwestwarrior
- 457
- 0
∫x^4 e^-x dx
ok this equation looks like this integral
∫u^n e^au du= (1/a) u^n e^au - n/a ∫u^n-1 e^au du
i did integration by parts and i ran in circles, and i tried substituting u=-x
but i couldn't do much with it, so what can i do
ok this equation looks like this integral
∫u^n e^au du= (1/a) u^n e^au - n/a ∫u^n-1 e^au du
i did integration by parts and i ran in circles, and i tried substituting u=-x
but i couldn't do much with it, so what can i do