જો $f(n) = \tan \left[\tan ^{-1} \frac{1}{1+2} + \tan ^{-1} \frac{1}{1+6} + \tan ^{-1} \frac{1}{1+12} + \ldots + \tan ^{-1} \frac{1}{1+n(n+1)}\right]$ હોય, તો $f(2021) =$

  • A
    $\frac{2020}{2022}$
  • B
    $\frac{2022}{2024}$
  • C
    $\frac{2021}{2023}$
  • D
    $\frac{2019}{2021}$

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Similar Questions

જો $0 \le x \le 1$ અને $(\sin^{-1} x)^3 + (\cos^{-1} x)^3 = a\pi^3$ હોય, તો $a$ નો વિસ્તાર શોધો.

જો $\tan ^{-1} a+\tan ^{-1} b+\tan ^{-1} c=\pi$ હોય,તો નીચેનામાંથી કયું સાચું છે?

સાબિત કરો કે $\sin^{-1}(2x\sqrt{1-x^2}) = 2\sin^{-1}x$,જ્યાં $-\frac{1}{\sqrt{2}} \leq x \leq \frac{1}{\sqrt{2}}$.

જો $\cos^{-1} x - \cos^{-1} \frac{y}{2} = \alpha$ હોય,તો $4x^2 - 4xy \cos \alpha + y^2$ ની કિંમત શોધો.

જો $\cot(\cos^{-1} x) = \sec(\tan^{-1} \frac{a}{\sqrt{b^2 - a^2}})$ હોય, તો $x$ ની કિંમત શોધો

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