જો $y = \tan^{-1}\left(\frac{1}{x^2 + x + 1}\right) + \tan^{-1}\left(\frac{1}{x^2 + 3x + 3}\right) + \tan^{-1}\left(\frac{1}{x^2 + 5x + 7}\right) + \dots$ $n$ પદો સુધી હોય,તો $\frac{dy}{dx}$ ની કિંમત શોધો.

  • A
    $\frac{1}{1 + (x + n)^2} - \frac{1}{1 + x^2}$
  • B
    $\frac{1}{1 + (x + n)^2} + \frac{1}{1 + x^2}$
  • C
    $\frac{1}{1 + (x + n)^2} - \frac{1}{1 + (x + n - 1)^2}$
  • D
    $\frac{1}{1 + (x + n)^2} + \frac{1}{1 + (x + n - 1)^2}$

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Similar Questions

$|x| \geq 1$ માટે $\cos \left(\sec ^{-1} x+\csc ^{-1} x\right)$ ની કિંમત શોધો.

સાબિત કરો કે $3 \cos ^{-1} x = \cos ^{-1} (4 x^{3} - 3 x)$,જ્યાં $x \in [\frac{1}{2}, 1]$.

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}) = $ . . . . . . .

$\cot ^{-1}\left(\frac{1}{\sqrt{x^2-1}}\right)=$ . . . . . . જ્યાં,$x>1$.

$\sin ^{-1}\left(\frac{3}{5}\right)-\sin ^{-1}\left(\frac{8}{17}\right)=$ . . . . . .

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