$\int \frac{x+1}{x(1+x e^x)^2} \,d x=$

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

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$\int \frac{x-1}{(x-2)(x-3)} \, dx$ का मान ज्ञात कीजिए।

मान लीजिए $f(x) = \int \frac{2x}{(x^2+1)(x^2+3)} dx$. यदि $f(3) = \frac{1}{2}(\log_e 5 - \log_e 6)$ है,तो $f(4)$ का मान ज्ञात कीजिए।

यदि $\int \frac{2 x^2}{\left(2 x^2+\alpha\right)\left(x^2+5\right)} d x=\frac{\sqrt{5}}{3} \tan ^{-1} \frac{x}{\sqrt{5}}-\frac{\sqrt{2}}{3} \tan ^{-1} \frac{x}{\sqrt{2}}+c$ है, तो $\alpha=$

$\int \frac{x - 1}{(x - 3)(x - 2)} \, dx = $

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

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