In this exercise we show that the unit cylinder r²+y² = 1 can be covered by a single patch. Let U = {(u, v) | 0 < u² + v² < n²}, and let r = Vu² o(u, v) = (r, y, 2) = (E; tan(r – 7/2) + v². Define rr (a) Show that a² + y² = 1. What is the range of z? (b) Describe how U is deformed to obtain the cylinder. (c) Find the inverse of o and argue that both o and o¬l are smooth.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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In this exercise we show that the unit cylinder r?+y² = 1 can be covered
by a single patch.
Let U = {(u, v) | 0 < u² + v² < n²}, and let r = Vu² + v². Define
o(u, v) = (x, y, 2) = (÷ tan(r – 7/2))
и и
(a) Show that x² + y? = 1. What is the range of z?
%3D
(b) Describe how U is deformed to obtain the cylinder.
(c) Find the inverse of o and argue that both o and o are smooth.
Transcribed Image Text:In this exercise we show that the unit cylinder r?+y² = 1 can be covered by a single patch. Let U = {(u, v) | 0 < u² + v² < n²}, and let r = Vu² + v². Define o(u, v) = (x, y, 2) = (÷ tan(r – 7/2)) и и (a) Show that x² + y? = 1. What is the range of z? %3D (b) Describe how U is deformed to obtain the cylinder. (c) Find the inverse of o and argue that both o and o are smooth.
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