निम्नलिखित फलन का $x$ के सापेक्ष समाकलन कीजिए:
$2 x \sin \left(x^{2}+1\right)$

  • A
    $-\cos \left(x^{2}+1\right)+C$
  • B
    $\cos \left(x^{2}+1\right)+C$
  • C
    $\sin \left(x^{2}+1\right)+C$
  • D
    $-\sin \left(x^{2}+1\right)+C$

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