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OpenStudy (anonymous):
What is the domain of y = cos x ? A. negative 1 is less than or equal to x is less than or equal to 1 B. x is less than or equal to zero C. x is greater than or equal to zero D. all real numbers
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OpenStudy (anonymous):
-1<=y<=1 x is all real numbers =>D
OpenStudy (anonymous):
thanks
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