यदि $\frac{ax - 1}{(1 - x + x^2)(2 + x)} = \frac{x}{1 - x + x^2} - \frac{1}{2 + x}$ है,तो $a = $

  • A
    $2$
  • B
    $3$
  • C
    $4$
  • D
    $5$

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यदि $\frac{x^2}{2 x^4+7 x^2+6}=\frac{A x+B}{x^2+a}+\frac{C x+D}{a x^2+3}$ है, तो $A+B+C-2 D$ का मान ज्ञात कीजिए। ($a$ में)

यदि $\frac{x^2+1}{(x^2+2)(x^2+3)} = \frac{Ax+B}{x^2+2} + \frac{Cx+D}{x^2+3}$ है, तो $A+B+C+D=$

$\text{यदि } \frac{3x^2+1}{(x^2+1)(x^2+2)^2} = \frac{Ax+B}{x^2+1} + \frac{Cx+D}{x^2+2} + \frac{Ex+F}{(x^2+2)^2} \text{ है, तो } A+C+E = $

सीमा का मूल्यांकन करें: $\lim _{n \rightarrow \infty} \sum_{r=1}^n \frac{r+2}{r(r+1)(r+3)}$

यदि $\frac{2x + 3}{(x + 1)(x - 3)} = \frac{a}{x + 1} + \frac{b}{x - 3}$ हो,तो $a + b$ का मान ज्ञात कीजिए।

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