The possible values of x, which satisfy the t | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Given the equation: $	an ^{-1}\left(\frac{x-1}{x-2}ight)+	an ^{-1}\left(\frac{x+1}{x+2}ight)=\frac{\pi}{4}$ Using the formula $	an ^{-1} A

Vedclass · Accepted Answer

$\pm \frac{1}{\sqrt{2}}$

Vedclass · Answer

(A) Given the equation: $	an ^{-1}\left(\frac{x-1}{x-2}ight)+	an ^{-1}\left(\frac{x+1}{x+2}ight)=\frac{\pi}{4}$ Using the formula $	an ^{-1} A + 	an ^{-1} B = 	an ^{-1} \left( \frac{A+B}{1-AB} ight)$, we get: $	an ^{-1}\left[\frac{\frac{x-1}{x-2}+\frac{x+1}{x+2}}{1-\left(\frac{x-1}{x-2}ight) \left(\frac{x+1}{x+2}ight)}ight]=\frac{\pi}{4}$ Taking $	an$ on both sides: $\frac{\frac{x-1}{x-2}+\frac{x+1}{x+2}}{1-\frac{(x-1)(x+1)}{(x-2)(x+2)}} = 	an \frac{\pi}{4} = 1$ Simplifying the numerator and denominator: $\frac{(x-1)(x+2)+(x+1)(x-2)}{(x-2)(x+2)-(x-1)(x+1)} = 1$ $\frac{(x^2+x-2)+(x^2-x-2)}{(x^2-4)-(x^2-1)} = 1$ $\frac{2x^2-4}{-3} = 1$ $2x^2-4 = -3$ $2x^2 = 1$ $x^2 = \frac{1}{2}$ $x = \pm \frac{1}{\sqrt{2}}$

The possible values of $x$, which satisfy the trigonometric equation $\tan ^{-1}\left(\frac{x-1}{x-2}\right)+\tan ^{-1}\left(\frac{x+1}{x+2}\right)=\frac{\pi}{4}$ are

Similar Questions

If $p$ and $q$ are roots of $6x^2 + 10x + 1 = 0$,then the value of $[\tan^{-1} p + \tan^{-1} q]$ is: {where $[x]$ denotes the greatest integer less than or equal to $x$}

If $y = \tan^{-1}\left(\frac{1}{1+x+x^2}\right) + \tan^{-1}\left(\frac{1}{x^2+3x+3}\right) + \tan^{-1}\left(\frac{1}{x^2+5x+7}\right)$,then the value of $y'(0)$ is

If $x=\cos ^{-1}\left(\frac{1}{\sqrt{1+t^2}}\right)$ and $y=\sin ^{-1}\left(\frac{t}{\sqrt{1+t^2}}\right)$,then $\frac{dy}{dx}$ is

$\sec ^2(\tan ^{-1} 2) + \operatorname{cosec}^2(\cot ^{-1} 3)$ is equal to

$\sin \left[ \cos^{-1} \left( \frac{3}{5} \right) + \tan^{-1} 2 \right] = $

Vedclass Test Series

Exam Paper Generator

Online Exam Module