यदि फलन $\frac{1}{(1 - ax)(1 - bx)}$ का $x$ की घातों में विस्तार $a_0 + a_1x + a_2x^2 + a_3x^3 + \dots$ है,तो $a_n$ क्या है?

  • A
    $\frac{b^n - a^n}{b - a}$
  • B
    $\frac{a^n - b^n}{b - a}$
  • C
    $\frac{a^{n+1} - b^{n+1}}{b - a}$
  • D
    $\frac{b^{n+1} - a^{n+1}}{b - a}$

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$\begin{aligned} & \text{यदि } \frac{x^4}{(x-a)(x-b)(x-c)}=P(x)+\frac{A}{x-a}+\frac{B}{x-b} \\ & +\frac{C}{x-c} \text{ है, तो } P(0)+A(a-b)(a-c)= \end{aligned}$

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 $A+B+C+D=$

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

$\begin{aligned} & \frac{x^2+1}{x^4+4}=\frac{A x+B}{x^2-2 x+2}+\frac{C x+D}{x^2+2 x+2} \\ & \Rightarrow 3 A+2 B+3 C=\end{aligned}$

यदि $\frac{2 x^2+5 x+6}{(x+2)^3}=\frac{a}{x+2}+\frac{b}{(x+2)^2}+\frac{c}{(x+2)^3}$ है,तो $a \cdot b+b \cdot c+c \cdot a=$

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