1.

The equation \[2{{\cos }^{2}}\left( \frac{x}{2} \right).{{\sin }^{2}}x={{x}^{2}}+\frac{1}{{{x}^{2}}},\]\[0\le x\le \frac{\pi }{2}\] has

A. one real solution
B. no solution
C. more than one real solution
D. None of these
Answer» C. more than one real solution


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