$\frac{1}{x(x+1)(x+2) \ldots(x+n)} = \sum_{r=0}^{n} \frac{A_r}{x+r}$ હોય,તો $A_r$ ની કિંમત શોધો:

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

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Similar Questions

$\frac{2x^2+1}{x^3-1} = \frac{A}{x-1} + \frac{Bx+C}{x^2+x+1} \Rightarrow 7A + 2B + C = ?$

નીચેનામાંથી કયું અશુદ્ધ સંમેય અપૂર્ણાંક (improper rational fraction) છે?

જો $\frac{x^2+3}{x^4+2 x^2+9}=\frac{A x+B}{x^2+a x+b}+\frac{C x+D}{x^2+c x+b}$ હોય,તો $a A+b B+c C+D=$

જો $\frac{4 x^3+16 x+7}{\left(x^2+4\right)^2}=\frac{A x+B}{x^2+4}+\frac{C x+D}{\left(x^2+4\right)^2}$ હોય,તો $A, B, C, D$ માં શૂન્યતર કિંમતોની સંખ્યા કેટલી થાય?

જો $\frac{ax^2 + bx + c}{(x - 1)(x + 2)(2x + 3)} = \frac{3}{x - 1} + \frac{2}{x + 2} - \frac{5}{2x + 3}$ હોય,તો:

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