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OpenStudy (anonymous):
y = -1/2 cos x determine the range
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OpenStudy (anonymous):
-1 =< cos x <= 1
OpenStudy (ash2326):
y=-1/2cos x we know cos xlies between -1 and 1 so y will lie betwwen -1/2 and 1/2 Range of y [-1/2,1/2}
OpenStudy (anonymous):
yup
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