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\frac{d}{d x} (x^{n} + a^{n}) =

কত?

n x^{n - 1} + n a^{n - 1}

n x^{n - 1} + a^{n}

n x^{n - 1}

n x^{n - 1} + a^{n} \log n

ANS : 3

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