15. f(x, y) = xy /x² + y V9 – x² – y? 16. f(x, y) ▪ x + 2y + y? x² – y? 17. f(x, y) *

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Sketch the graph of the function.

15. f(x, y) = xy x² + y
9
16. f(х, у) —
– x² – y²
х+ 2у
17. f(x, y)
x² + y?
x - y?
Transcribed Image Text:15. f(x, y) = xy x² + y 9 16. f(х, у) — – x² – y² х+ 2у 17. f(x, y) x² + y? x - y?
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