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x = √2 then (xx)x = ………………….A) \(\frac{1}{\sqrt2}\)B) \(\frac{1}{4\sqrt2}\)C) \(\frac{1}{3\sqrt2}\)D) \(\frac{1}{5\sqrt2}\) |
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Answer» Correct option is (B) \(\frac{1}{4\sqrt{2}}\) \(x=\sqrt{2}=2^\frac12\) Then \(x^{-5}=\frac1{x^5}=\frac1{(2^\frac12)^5}\) \(=\frac1{2^\frac52}=\frac1{2^{2+\frac12}}\) \(=\frac{1}{2^2.2^\frac12}=\frac{1}{4\sqrt{2}}\) Correct option is B) \(\frac{1}{4\sqrt2}\) |
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