Please help me with the following questions.

1.

\fb g(b) Use the substitution formula f(g(x))g'(x)dx = | f(u)du where g(x) = u, to evaluate the following integrals. a g(a) COS Z (a) COS Z dz (b) dz 0 V6+ sin z 16+ sin z - 3x . . D COS Z (a) dz = (Simplify your answer. Type an integer or a fraction.) 0 16+ sin z COS Z (b) dz = (Simplify your answer. Type an integer or a fraction.) 16+ sin z - 3TCb b Use the rules for definite integration and the formulas | cdx = c(b - a) for any constant c and xdx = 62 2 2 2 for b > a to evaluate the integral (4t - 9)dt. a 2 . . . [(41-9)dt = ] 2 (Simplify your answer.)