The period of f(x) = sin4x + cos4x is
π
2π
π/2
4π
The period of f(x) = sin 4x + tan 2x is
None of these
The two linear functions which map [-1, 1] on [0,2] are
y = x + 1, y = 1 - x
y = x - 1, -1 - x
y = x, y = -x
y = 1 + 1/x
If A = {4,5,7} B = { 2,4} and C = {2,3,7} then (A-B) x(A-C) =
{(5,4) (5,5) (7,4) (7,5)}
{(5,5) (5,6) (7,5) (7,6)}
{(4,5) (5,5) (7,3) (7,7)}
None
Given A = { x∈ N : x≤ 4} and B = { y ∈ N: 3 < x ≤ 5}
then n (A×A) =
4
8
16
0
Cot θ
- Cot θ
-tan θ
- sin θ
The inverse function of logex is
10x
10-x
ex
e-x
If f(x) = x2 - 1/x2, f(x) =
-f(1/x)
f(1/x)
-f(x)
f(x2)
If f1(x) and f2 (x) are defined on domain D1 and D2, then the domain of f1(x) + f2 (x) is
D1 ∪ D2
D1 ∩ D2
D1 - D2
D2 - D1
The domain of the function f(x) = log |4 - x2| is
(-2, 2)
R - {2, -2}
{-2, 2}
