a. Use the formula к(t): = k(t): = ||r' (t) x r"(t)|| ||r' (t)||³ r(t) = e¹¹ti + e-tj to find k(t).

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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a.
b.
Use the formula k(t)
k(t)
=
k(t)
Use the formula k(t)
=
=
||r'(t) × r"(t)||
r(t) = e¹¹ti + e-tj
||r' (t)||³
=
||r' (t) x r"(t)||
||r'(t)||³
r(t) = 3 cos(2t)i + 3 sin(2t)j + tk
to find k(t).
to find k(t).
Transcribed Image Text:a. b. Use the formula k(t) k(t) = k(t) Use the formula k(t) = = ||r'(t) × r"(t)|| r(t) = e¹¹ti + e-tj ||r' (t)||³ = ||r' (t) x r"(t)|| ||r'(t)||³ r(t) = 3 cos(2t)i + 3 sin(2t)j + tk to find k(t). to find k(t).
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