Entered Answer Preview Result 81 81 correct 2 2 correct 2 2 correct (81/4)*[asin(x/3)-(1/4)*sin(4*asin(x/3))] 4 ( sin ' (3 ) - *sin ( 4sin ' ( ) ) ) incorrect At least one of the answers above is NOT correct. Using the substitution 3 sin(u) = x, we obtain x2 9 - x2dx = K sin" u cos" udu where the constants K = 81 m = 2 and n = 2 Using this result and your knowledge about indefinite integrals of powers of sin u and cos u, find the indefinite integral x2 9 - x2da = +c Note: Your answer should be in terms of x, not u