- Prove that the function f : R² → R defined by f(x, y) = x² + 4y² − 1 is neither injective nor surjective.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.6: Quadratic Functions
Problem 30E
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Prove that the functionf : R² → R defined by ƒ(x, y) = x² + 4y² − 1 is
neither injective nor surjective.
COMPLETE SOLUTIONS
TYPEWRITTEN OR WRITE LEGIBLY
UNCLEAR SOLUTIONS WILL GET A LOW RATING
Transcribed Image Text:Prove that the functionf : R² → R defined by ƒ(x, y) = x² + 4y² − 1 is neither injective nor surjective. COMPLETE SOLUTIONS TYPEWRITTEN OR WRITE LEGIBLY UNCLEAR SOLUTIONS WILL GET A LOW RATING
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