The period of cos(x)2 is
2π
4π2
π2/4
None of these
The domain of sin-1 [log3(x/3)] is
(1,9)
(-1,9)
(-9,1)
(-9,-1)
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
Given f: N→N, If f={(1,3) (2,5) (3,7).........} then f(x)=
2x + 1
2x - 1
x + 1
x - 1
The two linear functions which map [-1, 1] on [0,2] are
y = x + 1, y = 1 - x
y = x - 1, -1 - x
y = 1 + 1/x
y = x, y = -x
Let f(x) = 1 + x, 0 ≤ x ≤ 2 = 3 - x, for 2 and g(x) = f[f(x)] =
g(x) = 2 + x, 0 ≤ x ≤ 1 = 2 - x, 1 < x ≤ 2 = 4 - x, 2 < x ≤ 3
g(x) = 2 - x2, 0 < x < 2 = 4 - x, 2 < x ≤ 3
g(x) = 2 + x, 0 ≤ x ≤ 2 = 4 + x, 2 < x ≤ 3
The inverse function of logex is
10x
10-x
ex
e-x
If f: R→ R, the range of the function f(x) = x2/x2+1, is
R-
R+
R
R x R
The period of f(x) = sin4x + cos4x is
π
π/2
4π
The period of f(x) = sin 4x + tan 2x is
