If tan-1 (x – 1) + tan-1 x + tan-1 (x + 1) = tan-1 3x, then the values of x are
A. \(\pm \frac{1}{2}\)
B. 0, \(\frac{1}{2}\)
C. 0, \(-\frac{1}{2}\)
D. 0, \(\pm \frac{1}{2}\)
Answer:D
If tan-1 (x – 1) + tan-1 x + tan-1 (x + 1) = tan-1 3x, then the values of x are
A. \(\pm \frac{1}{2}\) B. 0, \(\frac{1}{2}\) C. 0, \(-\frac{1}{2}\) D. 0, \(\pm \frac{1}{2}\)