Question

need help on the attachment @Calculus1

Answer 1

u-sub:1-x^2

Answer 2

notice that the derivative of the above ^ is in the integral itself

Answer 3

I did that and I got 2u^(3/2)/3

Answer 4

plugging back the original function I got 2(1-x^(2))/3

Answer 5

notice you can write 4th root(1-x^2) as (1-x^2)^1/4

Answer 6

also notice that the x oustide the 4th root will divide out

Answer 7

leaving you with a 5 on the ouside of the integral, and a (u)^1/4 on the inside. Now integrate

Answer 8

I got 0

Answer 9

the function I got after integrating was -2(1-x^(2))^(5/4)

Answer 10

now, you should get: