problems # 1a, b and 3a, b.

1. Suppose a and b are positive constants. Calculate the antiderivative. a) evx -ar + br-1/'+1 b) a + bcos's 3. Use geometry (only) to evaluate the integral. /2 a +v2-s') dr /2/2 b ) NOTE #3a use limits of integration from 0 to v 2