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Can u solve it in 10 sec

Algebra Level 3

If $a,b\epsilon(0,2)$ and the equation $\frac{x^{2}+5}{2}=x-2cos(ax+b)$ has atleast one solution then $a+b=$

\frac{\pi}{2}

\pi

2

e

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by Tanishq Varshney

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