The principal value of is
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
Let f (x) = sec-1x + tan-1 x Then f (x) is real for
x∈[-1 , 1]
x∈ R
x∈ (-∞ , -1) ∪ [1 , ∞]
is equal to
cos-1 (cos x) = x is satisfied by
x∈ [-1, 1]
tan -1n + cot -1 (n +1 ) is equal to ______.
cot -1 (n2 + n + 1 )
cot -1 (n2 -n+1 )
tan -1 (n2 + n + 1 )
The formula holds only for
| x | ≤ 1
x ∈ (-1,1]
x∈[1, ∞ )
sec-1 ( sin x ) is real , if
x ∈ ( - ∞, α )
x ∈ [ -1, 1 ]
x = ( 2n + 1 ) π/2, n ∈ I
x = n π, n ∈ I
The value of is
0
1
