Question

Definite integrals:
Check my work

Answer 1

Ready when you are

Answer 2

My answer is 2/3

Answer 3

I get 1/6

What steps did you take to solve this?

Answer 4

I converted the equation to x^-2, then took the integral to get (x^-1)/1 .
I plugged 3 and 1 and got -1/3 - -1/1. That translated to 2/3.

Answer 5

How did you convert x^2/(x^3 + 1)^2 into x^-2?

There should be some substitution in there.

Answer 6

ohh...I see what happened. I posted the wrong problem!

Answer 7

let u = x^3+1

Then du=3x^2 dx

Which would give you

Answer 8

ok

Answer 9

2/3 is correct then

Answer 10

Thanks! Was my process good?

Answer 11

yes

Answer 12

Would you check my work for the mistakenly posted problem?

Answer 13

yes go for it

Answer 14

Actually, post a new problem and Ill help you there