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$\int \frac{x^9}{\left(4 x^2+1\right)^6} d x$ बराबर है

• A
  $\frac{1}{5 x}\left(4+\frac{1}{x^2}\right)^{-5}+C$
• B
  $\frac{1}{5}\left(4+\frac{1}{x^2}\right)^{-5}+C$
• C
  $\frac{1}{10 x}(1+4)^{-5}+C$
• ✓
  $\frac{1}{10}\left(\frac{1}{x^2}+4\right)^{-5}+C$