sec-1 ( sin x ) is real , if
x ∈ ( - ∞, α )
x ∈ [ -1, 1 ]
x = ( 2n + 1 ) π/2, n ∈ I
x = n π, n ∈ I
is equal to
None of these
The formula holds for
x ∈ [0,1]
x ∈ (-1,0)
, When x > 0, then x is equal to ______.
0
3
-2/3
The formula holds only for
x∈ R
| x | ≤ 1
x ∈ (-1,1]
x∈[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 )
a/2
a3
a2-a +1
a2 + a -1
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
cos [ tan -1 {sin (cot-1 x )} ] is equal to _________.
