University Calculus: Early Transcendentals (3rd Edition)

Published by Pearson
ISBN 10: 0321999584
ISBN 13: 978-0-32199-958-0

Chapter 13 - Section 13.3 - Partial Derivatives - Exercises - Page 702: 1

Answer

∂f/∂x = 4x ∂f/∂y = -3

Work Step by Step

$f(x,y) = 2x^2 -3y -4$ 1. Calculate ∂f/∂x. $\frac{∂}{∂x}(2x^2) = 2*(2x) = 4x$ $\frac{∂}{∂x}(-3y) = 0$ $\frac{∂}{∂x}(-4) = 0$ Summing up these values: $∂/∂x (2x^2 -3y -4) = 4x$ 2. Calculate ∂f/∂y $∂/∂y (2x^2) = 0$ $∂/∂y (-3y) = -3$ $∂/∂y (-4) = 0$ Summing up these values: $∂/∂y (2x^2 -3y -4) = -3$
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