For t > 0, a particle moves along the x-axis. The velocity of the particle at time t is given by v (t) = cos(). (a) At time t = 4, is the particle speeding up or slowing down? Why? (b) Find all times t in the interval 0 < t <3 when the particle changes direction. Justify your answer.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
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Chapter6: Exponential And Logarithmic Functions
Section6.1: Exponential Functions
Problem 60SE: The formula for the amount A in an investmentaccount with a nominal interest rate r at any timet is...
Question
Fort > 0, a particle moves along the x-axis. The velocity of the particle at time t is given by
v (t) = 1/cos ( ² ).
3
(a) At time t
4, is the particle speeding up or slowing down? Why?
(b) Find all times t in the interval 0 < t < 3 when the particle changes direction. Justify your answer.
=
Transcribed Image Text:Fort > 0, a particle moves along the x-axis. The velocity of the particle at time t is given by v (t) = 1/cos ( ² ). 3 (a) At time t 4, is the particle speeding up or slowing down? Why? (b) Find all times t in the interval 0 < t < 3 when the particle changes direction. Justify your answer. =
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