$a > 0$ માટે,ધારો કે $\frac{1}{a(a+1)(a+2) \ldots(a+20)}=\sum_{k=0}^{20} \frac{A_{k}}{a+k}$. તો $100\left(\frac{A_{14}+A_{15}}{A_{13}}\right)^{2}$ ની કિંમત $....$ છે.

  • A
    $9$
  • B
    $27$
  • C
    $3$
  • D
    $81$

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

જો $|x| < \frac{1}{2}$ હોય,અને $\frac{2 x^3+8 x^2-2 x-2}{(1-x)(1+x)(1-2 x)}$ ના $x$ ની ઘાતમાં વિસ્તરણમાં $x^{10}$ નો સહગુણક અને અચળ પદ અનુક્રમે $l$ અને $m$ હોય,તો $lm=$

જો $\frac{9}{(x - 1)(x + 2)^2} = \frac{A}{x - 1} + \frac{B}{x + 2} + \frac{C}{(x + 2)^2}$ હોય,તો $A - B - C = $

જો $\frac{x^4}{(x-1)(x-2)(x-3)}=p(x)+\frac{A}{x-1}+\frac{B}{x-2}+\frac{C}{x-3}$ હોય,તો $p\left(\frac{3}{2}\right)+C=$

$\frac{3x - 1}{(1 - x + x^2)(2 + x)}$ નો આંશિક અપૂર્ણાંક શોધો.

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