જો $0 < x < 1$ અને $\tan ^{-1}(1-x), \tan ^{-1} x$ તથા $\tan ^{-1}(1+x)$ સમાંતર શ્રેણી ($A$.$P$.) માં હોય,તો $x^3$ ની કિંમત : . . . . . . થાય.

  • A
    $x^2-1$
  • B
    $1+x^2$
  • C
    $1-x^2$
  • D
    $x^2$

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Similar Questions

સાબિત કરો કે $2 \tan ^{-1} \frac{1}{2} + \tan ^{-1} \frac{1}{7} = \tan ^{-1} \frac{31}{17}$.

કિંમત શોધો: $\tan ^2(\sec ^{-1} 3) + \operatorname{cosec}^2(\cot ^{-1} 2) + \cos ^2(\cos ^{-1} \frac{2}{3} + \sin ^{-1} \frac{2}{3}) = $ . . . . . . .

જો $\tan ^{-1}x + \tan ^{-1}y + \tan ^{-1}z = \frac{\pi }{2}$ હોય,તો

પદાવલિ $ \tan \left(\frac{1}{2} \cos ^{-1} \frac{2}{\sqrt{5}}\right) $ ની કિંમત શોધો.

જો $\cos ^{-1} x+\cos ^{-1} y+\cos ^{-1} z=3 \pi$ હોય,તો $x^2+y^2+z^2-2xyz$ ની કિંમત શોધો.

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