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虎牙直播龙族幻想 www.qhdwl.icu 2019-05-05 21:55 虎牙直播龙族幻想 admin

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摘要:刷百題不如精做真題。近期,三立小編為大家整理了2010-2018年AP各科考試真題大全,以幫助大家更好準備考試。今天,小編為大家帶來的是2018年AP微積分AB真題及下載-簡答題(FRQ)部分,希望對備考的你有所幫助! 1. People enter a line for an escalator at a rate modeled by the function r given by where r(t) is measured in people per second and t is measured in seconds. As people get

  “刷百題不如精做真題”。近期,三立小編為大家整理了2010-2018年AP各科考試真題大全,以幫助大家更好準備考試。今天,小編為大家帶來的是2018年AP微積分AB真題及下載-簡答題(FRQ)部分,希望對備考的你有所幫助!

  1.    People enter a line for an escalator at a rate modeled by the function r given by

  where r(t) is measured in people per second and t is measured in seconds. As people get on the escalator, they exit the line at a constant rate of 0.7 person per second. There are 20 people in line at time t =   0.

  (a)  How many people enter the line for the escalator during the time interval 0 £  t £  300 ?

  (b) During the time interval 0 £ t £ 300, there are always people in line for the escalator. How many people are in line at time t =  300 ?

  (c)  For t >  300, what is the first time t that there are no people in line for the escalator?

  (d) For 0 £ t £ 300, at what time t is the number of people in line a minimum? To the nearest whole number, find the number of people in line at this time. Justify your answer.

  2.     A particle moves along the x-axis with velocity given by v(t) = 10 sin(0.4t2) for time 0 £  t £  3.5. t2 − t + 3

  The particle is at position x = −5 at time t = 0.

  (a)  Find the acceleration of the particle at time t =  3.

  (b)  Find the position of the particle at time t =  3.3.5

  (c) Evaluate ∫0the problem.3.5v(t) dt , and evaluate ∫0v(t)   dt . Interpret the meaning of each integral in the context of

  (d) A second particle moves along the x-axis with position given by x2(t) = t2 − t for 0 £ t £ 3.5. At what time t are the two particles moving with the same velocity?

2018年AP微積分AB真題及下載-簡答題(FRQ)部分2018年AP微積分AB真題及下載-簡答題(FRQ)部分2018年AP微積分AB真題及下載-簡答題(FRQ)部分2018年AP微積分AB真題及下載-簡答題(FRQ)部分

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