समाकलन $\int \frac{1}{(x+2)(x^2+1)} \, dx$ का मान ज्ञात कीजिए।

  • A
    $\frac{1}{5} \log \left| \frac{x+2}{\sqrt{x^2+1}} \right| - \frac{1}{5} \tan^{-1} x + c$
  • B
    $\frac{1}{5} \log \left| \frac{x+2}{\sqrt{x^2+1}} \right| + \frac{1}{5} \tan^{-1} x + c$
  • C
    $\frac{1}{5} \log \left| \frac{x^2+1}{x+2} \right| - \frac{1}{5} \tan^{-1} x + c$
  • D
    $\frac{1}{5} \log \left| \frac{x+2}{x^2+1} \right| - \frac{2}{5} \tan^{-1} x + c$

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समाकल $\int_1^2 \frac{x \, dx}{(x+2)(x+3)}$ का मान ज्ञात कीजिए।

$\int \frac{dx}{x(x^5 + 1)} = $

$\int \frac{x \, dx}{(x-1)^2(x+2)} = $

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

$\int \frac{x^3-1}{x^3+x} dx =$

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