This is in Differential Calculus. This is only multiple choice. Provide necessary solution for each items. Thank you and Godbless.

1. Given = = In(x +y ), what is =, or Oxdy 4xy 2x- - 2p2 A) C) + 12 -2r-+2v2 4xy B) D + 1 + 12 2. Given = = 2x y-xy, find- when x = 2 and y = 3.. A) C B) -3 D) 3. Given x y x v = e", find . Hint: Take In of both sides. ax V X A) (2 + Iny) C) y(2 + Iny) V x-y B) D) x(2- ly) x(2 - Iny)