$\int \sqrt{3-2x-x^2} \, dx = $ . . . . . . $+ C$.

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

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