`tan^(-1)(x/y)-tan^(-1)((x-y)/(x+y))` is (A) `pi/2` (B) `pi/3` (C) `pi/4` (D) `pi/4` or `(3pi)/4`

tan^(-1)(x/y)-tan^(-1)(x-y)/(x+y) is equal to (A) pi/2 (B) pi/3 (C) pi/4 (D) (-3pi)/4

tan^(-1)(x/2)+tan^(-1)(x/3)=(pi)/(4)

tan^(-1)2x+tan^(-1)3x=(pi)/(4)

Prove that tan^(-1)((x)/(y))-tan^(-1)((x-y)/(x+y)) is (pi)/(4) and Not(-3 pi)/(4)

If tan^(-1)x=(pi)/(4)-tan^(-1)((1)/(3))then x is

The value of int_-1^3 [tan^-1(x/(x^2+1))+tan^-1((x^2+1)/x)]dx= (A) pi/2 (B) 2pi (C) pi (D) pi/4

If alpha=tan^(-1)((sqrt(3)x)/(2y-x)) , beta=tan^(-1)((2x-y)/(sqrt(3)y)) , then alpha-beta= pi/6 (b) pi/3 (c) pi/2 (d) -pi/3

Range of f(x)=sin^(-1)x+tan^(-1)x+sec^(-1)x is (a) ((pi)/(4),(3 pi)/(4))( b) [(pi)/(4),(3 pi)/(4)]( c) {(pi)/(4),(3 pi)/(4)}(d) none of these