is equal to
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
The formula holds for
x ∈ [0,1]
x ∈ (-1,0)
The principal value of is
tan -1n + cot -1 (n +1 ) is equal to ______.
cot -1 (n2 + n + 1 )
cot -1 (n2 -n+1 )
tan -1 (n2 + n + 1 )
Let f (x) = sec-1x + tan-1 x Then f (x) is real for
x∈[-1 , 1]
x∈ R
x∈ (-∞ , -1) ∪ [1 , ∞]
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
The value of is
0
1
cos-1 (cos x) = x is satisfied by
x∈ [-1, 1]
