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$y = l o g_{y} x$ হলে, $\frac{d y}{d x}$ এর মান কত?

\frac{1}{x (1 + l n y)}

\frac{1}{x (1 + l n x)}

\frac{1}{x l n y}

\frac{1}{x l n x}

\frac{1}{y (1 + l n x)}

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