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Math Help - differentiation?

  1. #1
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    differentiation?

    could anyone help me with this problem please?

    A vibration is identified as having the sinusoidal wave form equation of: -

    s=0.55sin(3t/10-0.12)



    i) Using calculus determine, and prove, the (first) times at which the displacement is a MAXIMUM and also a MINIMUM to 6 dec places.

    ii) Determine to 6 decimal places the value of the maximum and minimum displacements at these times.
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