The range of the function y = 2cos x is -2 ≤ y ≤ 2.

Mathematics
Tutor: None Selected Time limit: 1 Day

True or False 

Apr 12th, 2015

True,  because -1<= cosx <=1.

Apr 12th, 2015

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Apr 12th, 2015
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Apr 12th, 2015
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