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The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s = 4 sin ¦Ðt + 3 cos ¦Ðt, where t is measured in seconds.

(a)Find the average velocity during each time period.
(i) [1, 2]
(ii) [1, 1.1]
(iii) [1, 1.01]
(iv) [1, 1.001]
(b) Estimate the instantaneous velocity of the particle when t = 1.

  • math -

    On both my Mac and my PC your equation
    s = 4 sin ¦Ðt + 3 cos ¦Ðt

    came out with strange symbols that I could not read.
    Are the π or √ or something else ?

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