Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN: 9781285741550
Author: James Stewart
Publisher: Cengage Learning
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I need help with these three problems to find r'(t).

please help me i need step by step explanation on how to solve them.

find r'(t).
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Transcribed Image Text:find r'(t).
13. r(t) = 3 cos³ ti + 2 sin³ tj + k
14. r(t) = 4√ti + t² √tj + ln t²k
15. r(t) = e¯¹i + 4j + 5te¹k
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Transcribed Image Text:13. r(t) = 3 cos³ ti + 2 sin³ tj + k 14. r(t) = 4√ti + t² √tj + ln t²k 15. r(t) = e¯¹i + 4j + 5te¹k
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