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OpenStudy (anonymous):
What is the range of f(x) = cos(x)?
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OpenStudy (anonymous):
Range is the range of values that a function outputs. Think about the graph of cosine: what is the biggest it gets, and what is the smallest?
OpenStudy (anonymous):
1 to -1 then?
OpenStudy (anonymous):
Yes. Or, in interval notation: \([-1, 1]\)
OpenStudy (anonymous):
So the range f(x) = cos(x) is y ≤ 0 would be false?
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