im not sure how to do these, i tried integration by parts but just got stuck or got an unsure answer.. (S= integral)

1. S p^5 ln p dp

i got ln p(1/6p^6) - 37/100 p^12 + C, but i think that is wrong

2. S 1 (x^2 + 1) e^-x dx

0

i got 1+ 3e^-1 + C

3. S b =sqrt(3) arctan (1/x) dx

a = 1

4. S b = (1) (r^3)/sqrt (4+r^2)) dr

a = 0