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1 October, 19:27

For the function given, state the middle line: ƒ (t) = 3 cos (π t - 1).

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  1. 1 October, 21:36
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    The amplitude is 3 since y = A cos (B) + C

    The vertical shift is C = 0 and B = π t - 1 (horizontal frequency and shift)

    This means that the graph oscillate between - 3 and 3.

    The middle line is y = 0.
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