intergrate:
1) cos2xsin3x dx
2) 1+x ((x+Inx))^0.5
x
3) got this question sitting in front of me and not sure how to get my head about it sounds simple but aint got a scooby doo:
'Find the volume generated by rotating the area bounded by y=x^2 and y=4 around the line y=-1
ty x