pls answer all parts thx

1. [15 marks; (a) 5 marks, (b) 5 marks, (c) 5 marks] Compute the following integrals: (a) fora\" f (b) Evaluate the double integral [In e'"\")/"+y)dA where D is the triangle with verticas (0,0), (1,0) and (0, l). 2 ((3) Compute the volume of the ellipsoid bounded by the surface 3:2 + y_ + 22 = 1, a2 a>0