Problem. Let in R³, the hyperbolic paraboloid z = xy (a.) Find E, F, G, L, M and N …….... (b.) Prove that the Gaussian curvature k and mean curvature H are given by. k H 1 (x² + y² + 1)² ху (x² + y² +1)3/2

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.4: Plane Curves And Parametric Equations
Problem 34E
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a and b
Problem.
Let in R³, the hyperbolic paraboloid z = xy
(a.) Find E, F, G, L, M and N
(b.) Prove that the Gaussian curvature k and mean curvature H are given by .
1
k
(x² + y² + 1)²
ху
H
(x² + y² + 1)3/2°
(c.) Deduce that the values of k¡ and kj are given by .
-xy+ /(x² +1)(v² + 1)
(x² + y² + 1)3/2
- V(x²+1)(y² + 1)
(x² + y² + 1)3/2
V
ki
— ху —
k2
(d.) Prove that all points on the hyperbolic paraboloid are hyperbolic points ..
Transcribed Image Text:Problem. Let in R³, the hyperbolic paraboloid z = xy (a.) Find E, F, G, L, M and N (b.) Prove that the Gaussian curvature k and mean curvature H are given by . 1 k (x² + y² + 1)² ху H (x² + y² + 1)3/2° (c.) Deduce that the values of k¡ and kj are given by . -xy+ /(x² +1)(v² + 1) (x² + y² + 1)3/2 - V(x²+1)(y² + 1) (x² + y² + 1)3/2 V ki — ху — k2 (d.) Prove that all points on the hyperbolic paraboloid are hyperbolic points ..
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