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JEE Mains · Maths · STD 12 - 2. inverse trigonometric function

फलन \(f(x)=\sin ^{-1}\left[2 x^2-3\right]+\log _2\left(\log _{\frac{1}{2}}\left(x^2-5 x+5\right)\right)\) जहाँ \([ t ]\) महत्तम पूर्णांक फलन है, का प्रांत है :

  1. A \(\left(-\sqrt{\frac{5}{2}}, \frac{5-\sqrt{5}}{2}\right)\)
  2. B \(\left(\frac{5-\sqrt{5}}{2}, \frac{5+\sqrt{5}}{2}\right)\)
  3. C \(\left(1, \frac{5-\sqrt{5}}{2}\right)\)
  4. D \(\left[1, \frac{5+\sqrt{5}}{2}\right)\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\left(1, \frac{5-\sqrt{5}}{2}\right)\)

Step-by-step Solution

Detailed explanation

\(f(x)=\sin ^{-1}\left[2 x^{2}-3\right]+\log _{2}\left(\log _{\frac{1}{2}}\left(x^{2}-5 x+5\right)\right)\) \(P_{1}:-1 \leq\left[2 x^{2}-3\right]<1\) \(\Rightarrow-1 \leq 2 x ^{2}-3<2\) \(\Rightarrow 2<2 x ^{2}<5\) \(\Rightarrow 1< x ^{2}<\frac{5}{2}\)…
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