17. r(t) (te, 2 arctan 1, 2e¹), 1-0

Calculus: Early Transcendentals
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Chapter1: Functions And Models
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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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Number 17
13. r(t) = e¹¹i − j + ln(1 + 3r) k
14. r(t) at cos 3ri + b sin³rj + c cos³t k
15. r(t) =a + rb + f²c
16. r(t)tax (b + c)
17-20 Find the unit tangent vector T() at the point with the given
value of the parameter 1.
17. r(t) (te, 2 arctan 1, 2e'), 1–0
18. r(t) = (z³ + 31, 1² + 1,31 + 4), 1 – 1
19. r(7) = cos /i + 3j + 2 sin 2/ k,
20. r(1) = sin²zi + cos²zj + tan²1 k, 1 = π/4
P
21. If r(1) – (1, 1², 1³), find r'(7), T(1), r"(7), and r'(7) × r”(1).
22. If r(t) (e¹,e2, te"), find T(0), r”(0), and r¹(7) · r”(1).
23-26 Find parametric equations for the tangent line to the curve
with the given parametric equations at the specified point.
23. x1 + 2√7. y − 1 − 1,
2− 1'³ +1: (3.0.2)
24. xe¹. y—_le',_- — te'.
(1.0.0)
25. xecos 1. 1
sin /.
5-2 11, 0, 1)
26.
2-12
27. Find a vector equation for the tangent line to the curve of inter-
section of the cylinders a
25 and y
20 at the
point (3.4.2)
28. Find the point on the surve rızı
0277 where the tangent line is parallel to the plane
Transcribed Image Text:13. r(t) = e¹¹i − j + ln(1 + 3r) k 14. r(t) at cos 3ri + b sin³rj + c cos³t k 15. r(t) =a + rb + f²c 16. r(t)tax (b + c) 17-20 Find the unit tangent vector T() at the point with the given value of the parameter 1. 17. r(t) (te, 2 arctan 1, 2e'), 1–0 18. r(t) = (z³ + 31, 1² + 1,31 + 4), 1 – 1 19. r(7) = cos /i + 3j + 2 sin 2/ k, 20. r(1) = sin²zi + cos²zj + tan²1 k, 1 = π/4 P 21. If r(1) – (1, 1², 1³), find r'(7), T(1), r"(7), and r'(7) × r”(1). 22. If r(t) (e¹,e2, te"), find T(0), r”(0), and r¹(7) · r”(1). 23-26 Find parametric equations for the tangent line to the curve with the given parametric equations at the specified point. 23. x1 + 2√7. y − 1 − 1, 2− 1'³ +1: (3.0.2) 24. xe¹. y—_le',_- — te'. (1.0.0) 25. xecos 1. 1 sin /. 5-2 11, 0, 1) 26. 2-12 27. Find a vector equation for the tangent line to the curve of inter- section of the cylinders a 25 and y 20 at the point (3.4.2) 28. Find the point on the surve rızı 0277 where the tangent line is parallel to the plane
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