$\frac{1+x}{(1+x^2)(1-x)}$ में $x^{2012}$ का गुणांक क्या है?

  • A
    $1$
  • B
    $2011$
  • C
    $2012$
  • D
    $2013$

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यदि $\frac{3x^3-7x+1}{(x-2)^5} = \frac{A}{x-2} + \frac{B}{(x-2)^2} + \frac{C}{(x-2)^3} + \frac{D}{(x-2)^4} + \frac{E}{(x-2)^5}$ है,तो $A(B+C+D+E) =$ ?

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