What is the unit tangent vector to the curve r(t) = ti + t²j when t = 1. Select one: (i+2j) O (i+ 2j) O i+2j (f7 + !) o

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section: Chapter Questions
Problem 18T
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Engineering mathematics II

What is the unit tangent vector to the curve r(t) = ti + t²j when t = 1.
Select one:
(i+2j)
O (i+ 2j)
O (i+ 23)
O i+2j
Transcribed Image Text:What is the unit tangent vector to the curve r(t) = ti + t²j when t = 1. Select one: (i+2j) O (i+ 2j) O (i+ 23) O i+2j
Let r(t) = 6 In ti – 4tj + 2e"k represents the position of a particle at t > 0. What is the particle's velocity at
t = 2?
Select one:
O 4e'i – 4j +3k
O 4ei – 4j+ 3k
O 3i – 4j + 4e'k
O 3i – 4j + 2ek
Transcribed Image Text:Let r(t) = 6 In ti – 4tj + 2e"k represents the position of a particle at t > 0. What is the particle's velocity at t = 2? Select one: O 4e'i – 4j +3k O 4ei – 4j+ 3k O 3i – 4j + 4e'k O 3i – 4j + 2ek
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