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Question

The domain of the function $f(x)=\sin ^{-1}\left[2 x^{2}-3\right]+\log _{2}\left(\log _{\frac{1}{2}}\left(x^{2}-5 x+5\right)\right)$, where [t] is the greatest integer function, is :

$$ \left(-\sqrt{\frac{5}{2}}, \frac{5-\sqrt{5}}{2}\right) $$
$$ \left(\frac{5-\sqrt{5}}{2}, \frac{5+\sqrt{5}}{2}\right) $$
$$ \left(1, \frac{5-\sqrt{5}}{2}\right) $$
$$ \left[1, \frac{5+\sqrt{5}}{2}\right) $$

Solution

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