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Marvin Schuster

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3y ago
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11y ago

The function, sin(x) ranges between -1 and 1.

Therefore -2sin(x) ranges between 2 and -2.

The amplitude of a sin function is simply half the difference between its maximum and minimum.

That difference is 2 - (-2) = 4 so half the difference is 2.

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Q: Why is 2 the answer for amplitude of y equals -2 sin x?
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