2a/b
a/b
b/a
2b/a
is equal to ______.
tan -1 xy
tan-1 x/y
tan -1 y/x
None of these
The formula holds only for
x ∈ R
| x | ≤ 1
x∈ (-1, 1]
x∈[1, ∞)
Solution of the equation tan-1 2x + tan-1 3x = nπ + 3π/7 is
x=1, -1/6
x = 1/6
x = - 1/6
Let f(x)= sec-1x + tan-1x. Then f(x) is real for
x∈[-1,1]
x∈R
x∈ (-∝,-1) ∪(1, +∝)
none of these
Solution of the equation?tan-1 (x -1 ) + tan -1x + tan -1 ( x + 1 ) = tan -1 3x is
x = 0
x= ± 1/2
x = ± 1/3
sin-1(sin5π/6)=_____________
5π/6
2π/6
3π/6
π/6
cos-1 (cos x) = x is satisfied by
x∈ R
x∈ [-1, 1 ]
Solution of the equation cot -1 x + sin -1 1/√5 = π/4 is ?
x =3
x = 1/√5
