The value of is
0
1
None of these
sec-1 ( sin x ) is real , if
x ∈ ( - ∞, α )
x ∈ [ -1, 1 ]
x = ( 2n + 1 ) π/2, n ∈ I
x = n π, n ∈ I
If
x > y and y2 = 1 - x
x < y
x > y and y2 = x
y2 = 1 + x
The principal value of is
is equal to
, When x > 0, then x is equal to ______.
3
-2/3
tan -1 1/5 + tan -1 1/7 + tan -1 1/3 + tan -1 1/8 is equal to ________.
π/3
π/4
π/2
π
Let f (x) = sec-1x + tan-1 x Then f (x) is real for
x∈[-1 , 1]
x∈ R
x∈ (-∞ , -1) ∪ [1 , ∞]
The formula holds for
x ∈ [0,1]
x ∈ (-1,0)
The formula holds only for
| x | ≤ 1
x ∈ (-1,1]
x∈[1, ∞ )