More Questions!

My sv gave a few more questions to work on for her book. This time d topic is INTEGRATION..a bit more difficult than differentiation for me. I had to finish it by 2mrrw coz she want it by friday ptg. The total no. of questions are not as much as d previous ones but still near to 70 & i have about 20 more to go..huhu..can i make it?? Hope dat she check my answers before giving 'em to d editor..some of it i'm not sure of. Better not make too many mistakes huh..if not malu je..=p