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\int \frac{x}{9 x^{4} + 4} d x

এর মান কত?

\frac{1}{18} \tan^{- 1} \frac{2}{3} x^{2}

\frac{1}{12} \tan^{- 1} \frac{3 x^{2}}{2}

\frac{1}{24} \tan^{- 1} \frac{3 x^{2}}{2}

\frac{1}{24} I n \frac{3 x^{2} - 2}{3 x^{2} + 2}

\frac{1}{24} I n \frac{3 x^{2} + 2}{3 x^{2} - 2}

ANS : 2

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