$\int \frac{1 + x + \sqrt{x + x^2}}{\sqrt{x} + \sqrt{1 + x}} dx =$

  • A
    $\frac{1}{2} \sqrt{1 + x} + c$
  • B
    $\frac{2}{3} (1 + x)^{3/2} + c$
  • C
    $\sqrt{1 + x} + c$
  • D
    $2 (1 + x)^{3/2} + c$

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$\int \frac{x^3+2 x}{x^4+4} d x=$

यदि $\frac{d}{d x} f(x)=4 x^3-\frac{3}{x^4}$ इस प्रकार है कि $f(2)=0$,तो $f(x)$ किसके बराबर है?

$\int a^x \, da = $

निरीक्षण विधि द्वारा फलन $\sin 2x - 4e^{3x}$ का प्रति-अवकलज (या समाकल) ज्ञात कीजिए।

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