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Question 61 the book answer says b but I think it’s 20

Question 61 the book answer says b but I think it’s 20

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question 61 the book answer says b but I think it’s 20
the value of lim (A) 0 (B) 3 (C) 3x (D) 1 61. What is the velocity of a particle whose position function is s(t) = 21³ - 121² + 20t when the accel- eration is zero? (A) 0 (B) 14 (C) 20 (D) negative cos3x - 1 X 62. Log tan x= log sin x (A) log cos x (B) log sin x-log cos x (C) log cos x-log sin x log cos x (D) log sin x
Transcribed Image Text:the value of lim (A) 0 (B) 3 (C) 3x (D) 1 61. What is the velocity of a particle whose position function is s(t) = 21³ - 121² + 20t when the accel- eration is zero? (A) 0 (B) 14 (C) 20 (D) negative cos3x - 1 X 62. Log tan x= log sin x (A) log cos x (B) log sin x-log cos x (C) log cos x-log sin x log cos x (D) log sin x
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