यदि $\int \frac{2x+3}{(x-1)(x^2+1)} dx = \log_e {(x-1)^{\frac{5}{2}}(x^2+1)^a} - \frac{1}{2} \tan^{-1} x + A$ जहाँ $A$ एक स्वेच्छ अचर है,तो $a$ का मान है

  • A
    $\frac{5}{4}$
  • B
    $-\frac{5}{4}$
  • C
    $-\frac{5}{3}$
  • D
    $-\frac{5}{6}$

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