hiii. pls help me solve this question. write it neatly and understandable. need it ASAP. thx mateee... cheerssss.

c} Using the change of variables u = xy and v = x+y , evaluate \"(xe'z'yszwhere R is the region bounded by the lines x+y :1. 1+]! = 3 a and the curves x2 y2 = 1 and x2 y2 =1