Direction: Answer the following problem with complete solutions. Note: Failed to provide the solution even the answer is correct, will not be accepted. I. PROBLEM SOLVING (80pts) 1. [ exx +4 dx (5pts) 4. (x tan(x3)dx (5pts) VX 7 . dx (5pts) 6-x+/x 2. sec xdx (5pts) sinx 5. J dx (5pts) 8. 1+x2 sinx + cosx dx (5pts) 2x+3 x'sinx 3. dx (5pts) X 2 9 . dx (10pts) x 2-5x+4 6. ) -dx (5pts) $1093 sinx*+In (log 12-x*) 1+x 3 X 10. 4 XDCOS dx (10pts) k=1 N