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The range of the function \( f(x) = \frac{1}{2 - \cos 3x} \) is
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When taking reciprocals, always reverse inequality signs if all terms are positive.
KEAM - 2015
KEAM
Updated On:
May 8, 2026
\( (-2,\infty) \)
\( [-2,3] \)
\( \left(\frac{1}{3},2\right) \)
\( \left(\frac{1}{2},1\right) \)
\( \left[\frac{1}{3},1\right] \)
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