MATH146 Problem Set -3(PS3A) Module 3 1 NAME Sec Signature Date Posted A. Perform as indicated. (Show your CLEAR solution.) 1. Find the fry(x, y) of f(x, y) = xex - sin () + xy3. (15pts) 2. Locate all relative maxima, relative minima, or saddle points if any of f(x, y) = 3x3 + y2 - 9x + 4y. (35pts)