यदि $\int \frac{1}{(x-2)^5(x-1)^4} d x=\sum_{r=-4}^{-1} A_r\left(\frac{x-2}{x-1}\right)^r+\sum_{r=1}^3 A_r\left(\frac{x-2}{x-1}\right)^r+B f(x)$, तो $f(x)=$

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

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