$\frac{1}{x(x+1)(x+2) \ldots(x+n)} = \frac{A_0}{x} + \frac{A_1}{x+1} + \ldots + \frac{A_n}{x+n}$. $0 \leq r \leq n$ માટે,$A_r$ ની કિંમત શોધો:

  • A
    $(-1)^r \frac{1}{r!(n-r)!}$
  • B
    $(-1)^r \frac{r!}{(n-r)!}$
  • C
    $\frac{1}{r!(n-r)!}$
  • D
    $\frac{r!}{(n-r)!}$

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$\frac{x^2 - 5}{x^2 - 3x + 2}$ નો આંશિક અપૂર્ણાંક છે:

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જો $\frac{x^4}{(x-1)^2(x+1)}=Ax+B+\frac{P}{(x-1)}+\frac{Q}{(x-1)^2}+\frac{R}{x+1}$ હોય,તો $2AP-BQ+R=$

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