$\log_e(1 + 3x + 2x^2)$ ના વિસ્તરણમાં $x^n$ નો સહગુણક શું છે?

  • A
    $(-1)^n \left[ \frac{2^n + 1}{n} \right]$
  • B
    $\frac{(-1)^{n+1}}{n} [2^n + 1]$
  • C
    $\frac{2^n + 1}{n}$
  • D
    આમાંથી કોઈ નહીં

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Similar Questions

$\log_e x - \log_e (x - 1) = $

$\frac{1}{n^2} + \frac{1}{2n^4} + \frac{1}{3n^6} + \dots \infty = $

જો $0 < y < 2^{1/3}$ અને $x(y^3 - 1) = 1$ હોય,તો $\frac{2}{x} + \frac{2}{3x^3} + \frac{2}{5x^5} + \dots$ ની કિંમત શોધો:

જો $0 < a, b < 1$ અને $\tan^{-1} a + \tan^{-1} b = \frac{\pi}{4}$ હોય,તો $(a+b) - \left(\frac{a^2+b^2}{2}\right) + \left(\frac{a^3+b^3}{3}\right) - \left(\frac{a^4+b^4}{4}\right) + \dots$ ની કિંમત ..... છે.

$\frac{1}{1 \cdot 2 \cdot 3} + \frac{1}{3 \cdot 4 \cdot 5} + \frac{1}{5 \cdot 6 \cdot 7} + \dots \infty = $

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