2. I} Find fx(1,}nndfr(1.) ferxey) = e""'\"' where u = 3hr: + y: e = I tan1y and w=x+y. ll} Find the Tangent plane to the surface I: + 32332: = 13 at the paint (2* 3, %) . give your answer in the farm of A: + By + 2 = D