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...
Related questions
Question
Transcribed Image Text:2.
xy+3
1=
Solve the System.
Expert Solution
Step 1
x2 - xy + 3y2 = 17
x - y = 4
Hence, x = y + 4
Step 2
Substitute x = y + 4 in the equation x2 - xy + 3y2 = 17 to get,
(y + 4)2 - (y + 4)y + 3y2 =17
(y2 + 8y + 16) - (y2 + 4y) + 3y2 = 17
3y2 + 4y = 17 - 16 = 1
Or, 3y2 + 4y - 1 = 0
Step 3
Compare this with the standard quadratic equation: ay2 + by + c = 0
a = 3, b = 4, c = -1
Solution:
Step by step
Solved in 5 steps with 3 images
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