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JEE Mains · Maths · STD 11 - 8. sequence and series

माना फलन \(f(x)=\frac{1}{2+\sin 3 x+\cos 3 x}, x \in \operatorname{IR}\) का परिसर \([a, b]\) है। यदि \(\alpha\) और \(\beta\) क्रमशः \(a\) और \(b\) के समांतर माध्य और गुणोत्तर माध्य हैं, तो \(\frac{\alpha}{\beta}\) = ...........

  1. A \(\sqrt{2}\)
  2. B \(2\)
  3. C \(\sqrt{\pi}\)
  4. D \(\pi\)
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Answer & Solution

Correct Answer

(A) \(\sqrt{2}\)

Step-by-step Solution

Detailed explanation

\( f(x) \frac{1}{2+\sin 3 x+\cos 3 x} \) \( {\left[\frac{1}{2+\sqrt{2}}, \frac{1}{2-\sqrt{2}}\right]} \) \( \frac{\alpha}{\beta}=\frac{a+b}{2 \sqrt{a b}}=\frac{1}{2}\left(\sqrt{\frac{a}{b}}+\sqrt{\frac{b}{a}}\right) \)…
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