f(x) = \frac1\cos^2 x + \frac1\sin^2 x + 1 = \frac\sin^2 x + \cos^2 x\sin^2 x \cos^2 x + 1 = \frac1\sin^2 x \cos^2 x + 1 - Get link 4share
Mar 10, 2026
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