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OpenStudy (anonymous):
-2cos(x)
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OpenStudy (anonymous):
What is the range of -2cos(X)
OpenStudy (math&ing001):
Range of cos is [-1,1] -1 ≤ cos(x) ≤ 1 => 2 ≥ -2cos(x) ≥ -2 So range of -2cos(x) is [-2,2]
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