What kind of surfaces are the level surfaces f(x, y, z) = %3D const? 9. f = 4x – 3y + 2z 10. f = 9(x² + y²) + -²

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter10: Analytic Geometry
Section10.6: The Three-dimensional Coordinate System
Problem 40E: For the sphers x-12+y+22+z-42=36 and x2+y2+z2=64, find the ratio of their a surface areas. b...
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I don't understand how to do these.  Can you explain how to do #13?

 

What kind of surfaces are the level surfaces f(x, y, z) =
%3D
const?
9. f = 4x – 3y + 2z
10. f = 9(x² + y²) + -²
Transcribed Image Text:What kind of surfaces are the level surfaces f(x, y, z) = %3D const? 9. f = 4x – 3y + 2z 10. f = 9(x² + y²) + -²
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