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OpenStudy (anonymous):
the range of y=f(X)=ln(cosx) is
a. -inf
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OpenStudy (anonymous):
how did you figure that out?
OpenStudy (zarkon):
they are asking for the range not the domain.
OpenStudy (anonymous):
Ahh sorry english is not my native language :D
OpenStudy (anonymous):
The range is of course a.
OpenStudy (anonymous):
Because cos(x) takes values from -1 to 1. And ln projects the interval (0,1] onto (-INF, 0] which is answera.
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