calc

A particle moves along the x-axis with position function s(t) = e^(cos(x)). How many times in the interval [0, 2π] is the velocity equal to 0?
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More than 3< my nswer

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asked by Mel
  1. I think you must mean
    s(t) = e^(cos(t))

    velocity is zero when

    v(t) = ds/dt = e^cos(t) (-sin(t)) = 0
    sin(t)=0 when t is a multiple of pi.

    So, it looks like you are in error.

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    posted by Steve

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