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1. $\log_{e} \sqrt{x} + \log_{e} \sqrt[3]{x} + \log_{e} \sqrt[4]{x} = ক ত ?$

Answer: Option A

Explanation:

\log_{e} \sqrt{x} + \log_{e} \sqrt[3]{x} + \log_{e} \sqrt[4]{x} = \log_{e} x^{\frac{1}{2}} + \log_{e} x^{\frac{1}{3}} + \log_{e} x^{\frac{1}{4}} = \log_{e} x^{(\frac{1}{2} + \frac{1}{3} + \frac{1}{4})} = \log_{e} x^{(\frac{6 + 4 + 3}{12})} = \log_{e} x^{\frac{13}{12}} = \frac{13}{12} \log_{e} x

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