...bounded by the lines x=2, x = y/2, y = x in the xy-plane...
As an iterated integral, \iint_R (9x+5y)^2dA = \int^B_A \int^D_C (9x + by)^2 dx dy with limits of integration and evaluate the integ Evaluate the double integral \iint_{R} (2 - 3x + xy)dA when R is the triangle