यदि $\int \frac{1}{(x^{2} + 4)(x^{2} + 9)} dx = A \tan^{-1} \frac{x}{2} + B \tan^{-1} \left( \frac{x}{3} \right) + C$ है,तो $A - B =$

  • A
    $\frac{1}{6}$
  • B
    $\frac{1}{30}$
  • C
    $-\frac{1}{30}$
  • D
    $-\frac{1}{6}$

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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

$\int \frac{x}{(x - 2)(x - 1)} \, dx$ का सही मूल्यांकन क्या है? (जहाँ $p$ एक स्वेच्छ अचर है):

$\int \frac{1}{x\left[6(\log x)^2+7 \log x+2\right]} d x$ का मान ज्ञात कीजिए।

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$\int \frac{d x}{x\left(x^2+1\right)}=$

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