A particle moves in the yz-plane along the curve represented by the vector-valued function r(t) = 2 cos(t)j + 7 sin(t)k. (a) Describe the curve. ellipseshell    disktoruscircle (b) Find the minimum and maximum values of   r′   and

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.5: Polar Coordinates
Problem 97E
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A particle moves in the yz-plane along the curve represented by the vector-valued function
r(t) = 2 cos(t)j + 7 sin(t)k.
(a)
Describe the curve.
ellipseshell    disktoruscircle
(b)
Find the minimum and maximum values of 
 
r
 
 and 
 
r
 
.
 
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