5. Find an antiderivative of the integrand and use Part 2 of the Fundamental Theorem to evaluate the definite integral. al S (x2 - 1)dx b) =( sinx ) dx C) ST 23+1 dx X 6. Use the change of variable technique to find an antiderivative in terms of x . a) J cos( 4x) dx b) S (3x + 5 ); dx c) Sezxt dx