$y = x^{-\frac{1}{x}}$ হলে $\frac{dy}{dx} = ?$ (ক) $x^{-2-\frac{1}{x}}(1 - \ln x)$ (খ) $x^{\frac{1}{x}+2}(\ln x - 1)$ (গ) $x^{-2+\frac{1}{x}}(1 - \ln x)$ (ঘ) $x^{-2-\frac{1}{x}}(\ln x - 1)$

ID#7006 HSC Higher Math 1st MCQ (Sylhet 2023)

$y = x^{-\frac{1}{x}}$ হলে $\frac{dy}{dx} = ?$

ক) (ক) $x^{-2-\frac{1}{x}}(1 - \ln x)$

খ) (খ) $x^{\frac{1}{x}+2}(\ln x - 1)$

গ) (গ) $x^{-2+\frac{1}{x}}(1 - \ln x)$

ঘ) (ঘ) $x^{-2-\frac{1}{x}}(\ln x - 1)$

ক

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