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24 February, 21:43

Identify the height for the function: f (t) = 5sec (3t - π) + 1

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  1. 24 February, 22:45
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    (t) = 0 gives

    -24t + 60 = 0

    t = 2.5

    For this t, the second derivative s" (t) = - 24 is negative. And so, s (t) is maximum for t = 2.5.

    Maximum height is S = - 12 (2.5) ^2 + 60 (2.5) + 8 = 233ft
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