यदि $u$ और $v$, $x$ के फलन हैं, तो $\int \frac{1}{v^3} (uv \frac{du}{dx} - u^2 \frac{dv}{dx}) dx =$

  • A
    $\log uv + c$
  • B
    $\log \frac{u}{v} + c$
  • C
    $\frac{v^2}{2u^2} + c$
  • D
    $\frac{u^2}{2v^2} + c$

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