જો $(a+bx)^{-3} = \frac{1}{27} + \frac{1}{3}x + \dots$ હોય,તો ક્રમયુક્ત જોડ $(a, b)$ ની કિંમત શોધો.

  • A
    $(3, -27)$
  • B
    $(1, 1/3)$
  • C
    $(3, 9)$
  • D
    $(3, -9)$

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Similar Questions

$|x| < \frac{4}{3}$ માટે, $\frac{1}{(4-3 x)^{\frac{1}{2}}}$ ની આશરે કિંમત શું છે?

જો $|x| < \frac{1}{2}$ હોય,તો $\frac{1+2x}{(1-2x)^2}$ ના વિસ્તરણમાં $x^r$ નો સહગુણક શું થાય?

${\left( {\frac{a}{{a + x}}} \right)^{\frac{1}{2}}} + {\left( {\frac{a}{{a - x}}} \right)^{\frac{1}{2}}} = $

$1+\frac{1}{4}+\frac{1 \cdot 3}{4 \cdot 8}+\frac{1 \cdot 3 \cdot 5}{4 \cdot 8 \cdot 12}+\ldots$ ની કિંમત શોધો.

$1+\frac{1}{3}+\frac{1 \times 3}{3 \times 6}+\frac{1 \times 3 \times 5}{3 \times 6 \times 9}+\ldots \text{ to } \infty =$

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