ધારો કે $\alpha$ અને $\beta$ એ $5x^2 - 3x - 1 = 0$ ના બીજ છે. તો પદાવલિ $\left[ (\alpha + \beta)x - \left( \frac{\alpha^2 + \beta^2}{2} \right)x^2 + \left( \frac{\alpha^3 + \beta^3}{3} \right)x^3 - \dots \right]$ બરાબર શું થાય?

  • A
    $\ln(1 - \frac{3}{5}x - \frac{1}{5}x^2)$
  • B
    $\ln(1 + \frac{3}{5}x - \frac{1}{5}x^2)$
  • C
    $\ln(1 - \frac{3}{5}x + \frac{1}{5}x^2)$
  • D
    આપેલ પૈકી કોઈ નહીં

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$e^{\left( {x - \frac{1}{2}{(x - 1)}^2 + \frac{1}{3}{(x - 1)}^3 - \frac{1}{4}{(x - 1)}^4 + \dots} \right)}$ ની કિંમત શું થાય?

$\frac{1}{x + 1} + \frac{1}{2(x + 1)^2} + \frac{1}{3(x + 1)^3} + \dots \infty = $

જો $\log (1 - x + {x^2}) = {a_1}x + {a_2}{x^2} + {a_3}{x^3} + \dots$ હોય,તો ${a_3} + {a_6} + {a_9} + \dots$ ની કિંમત શોધો.

$\log _4 2 - \log _8 2 + \log _{16} 2 - \ldots$ ની કિંમત શોધો.

$\frac{1}{2} - \frac{1}{2 \cdot 2^2} + \frac{1}{3 \cdot 2^3} - \frac{1}{4 \cdot 2^4} + \ldots$ ની કિંમત શોધો.

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