समाकलन ज्ञात कीजिए: $\int \sqrt{x^2+4x+1} \, dx = \text{ . . . . . . } + C$.

  • A
    $\frac{x+2}{2} \sqrt{x^2+4x+1} - \frac{3}{2} \log \left|x+2+\sqrt{x^2+4x+1}\right|$
  • B
    $\frac{x+2}{2} \sqrt{x^2+4x+1} + \frac{3}{2} \log \left|x+2+\sqrt{x^2+4x+1}\right|$
  • C
    $\frac{x+2}{2} \sqrt{x^2+4x+1} - 9 \log \left|x+2+\sqrt{x^2+4x+1}\right|$
  • D
    $\frac{x+2}{2} \sqrt{x^2+4x+1} + 9 \log \left|x+2+\sqrt{x^2+4x+1}\right|$

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$\int \frac{dx}{(1+x) \sqrt{8+7x-x^2}} = $

निम्नलिखित कथनों का अवलोकन करें:
$A: \int \left(\frac{x^2-1}{x^2}\right) e^{\frac{x^2+1}{x}} d x = e^{\frac{x^2+1}{x}} + c$
$R: \int f^{\prime}(x) e^{f(x)} d x = f(x) + c$
तो निम्नलिखित में से कौन सा सत्य है?

यदि $\int {\frac{{{x^4} + 1}}{{x{{\left( {{x^2} + 1} \right)}^2}}}} dx = A \ln |x| + \frac{B}{{1 + {x^2}}} + c$,जहाँ $c$ समाकलन का स्थिरांक है,तो:

यदि $\int \frac{1+x^2}{1+x^4} dx=\frac{1}{\sqrt{2}} \tan ^{-1}\left[\frac{f(x)}{\sqrt{2}}\right]+c$ है,तो $f(x)=$

$\int {e^{x/2}} \sin \left( \frac{x}{2} + \frac{\pi}{4} \right) \, dx = $

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