જો $y = 2x^2 - 1$ હોય,તો $\left[ \frac{1}{y} + \frac{1}{3y^3} + \frac{1}{5y^5} + \dots \right]$ ની કિંમત શું થાય?

  • A
    $\frac{1}{2} \left[ \frac{1}{x^2} - \frac{1}{2x^4} + \frac{1}{3x^6} - \dots \right]$
  • B
    $\frac{1}{2} \left[ \frac{1}{x^2} + \frac{1}{2x^4} + \frac{1}{3x^6} + \dots \right]$
  • C
    $\frac{1}{2} \left[ \frac{1}{x^2} + \frac{1}{3x^6} + \frac{1}{5x^{10}} + \dots \right]$
  • D
    $\frac{1}{2} \left[ \frac{1}{x^2} - \frac{1}{3x^6} + \frac{1}{5x^{10}} - \dots \right]$

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શ્રેણી $\log_{4} 2 - \log_{8} 2 + \log_{16} 2 - \dots$ નો સરવાળો કેટલો થાય?

$\log_e [(1 + x)^{1 + x} (1 - x)^{1 - x}] = $

$\frac{m - n}{m + n} + \frac{1}{3}\left( \frac{m - n}{m + n} \right)^3 + \frac{1}{5}\left( \frac{m - n}{m + n} \right)^5 + \dots \infty = $

$|x| < 1$ માટે,$x$ ની ચડતી ઘાતમાં $\log(1+x+x^2)$ ના વિસ્તરણમાં $x^3$ નો સહગુણક શું છે?

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