Describe the relationship between the graphs of the quadric surfaces x2 + y2 - z2 + 2z = 1 and x2 + y2 - z2 = 0, and state the names of the surfaces.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.3: Lines
Problem 20E
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Describe the relationship between the graphs of the quadric surfaces x2 + y2 - z2 + 2z = 1 and x2 + y2 - z2 = 0, and state the names of the surfaces.

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