Evaluate the following definite or indefinite integrals. You must show all work. When using the substitution method, you must show the u and du expressions. The appearance of trig identities, unreasonable approaches, or other unsubstantiated formulations will result in no credit. a. (4 pts) e" cos(ex - 4) dac b. (4 pts) 4xV1 + x2 dac .3 c. (4 pts) 1 - 2-2 dac N cos 2x d. (4 pts) 1 + (sin 2ac) 2 dac 0