# TICKET-IN-THE-DOOR Conceptual: Given a function z = f(x,y), write what the following notations mean in words….

TICKET-IN-THE-DOOR Conceptual: Given a function z = f(x,y), write what the following notations mean in words. 1x = 2t (partial denotion off wit x ly =of sportial derivative off wit y) dy 1. – 2f (2nd partial derivativt off wit ly = df (2nd portial derivative off wrt yo Practice: 1. Find the first-order partial derivatives of the following functions a. w -2xy + 5yVx+ 7y5 b. f(x,y) = ek + y Inx 2. Find the four second-order partial derivatives of the function z = f(x,y) = x_y’ + xy + xey

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