3. (a) Show that the two surfaces S₁ z = xy and S₂ : 2 = x² - y² intersect perpendicularly at the point (2, 1,2). I (b) Show that every tangent plane to the cone z² = x² + y² must pass through the origin.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section: Chapter Questions
Problem 20T
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their nature.
3. (a) Show that the two surfaces S, : z = ry and S2 : z = x2 - y? intersect
perpendicularly at the point (2, 1, 2).
(b) Show that every tangent plane to the cone z? = x2+y² must pass through
the origin.
Transcribed Image Text:their nature. 3. (a) Show that the two surfaces S, : z = ry and S2 : z = x2 - y? intersect perpendicularly at the point (2, 1, 2). (b) Show that every tangent plane to the cone z? = x2+y² must pass through the origin.
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