If f: R→ R, the range of the function, is
R-
R+
R
R x R
Given f: N→N, If f={(1,3) (2,5) (3,7).........} then f(x)=
2x + 1
2x - 1
x + 1
x - 1
Which of the following functions are identical?
f(x) = x/x and ∅ (x) = 1
f(x) = logx2 and ∅ (x) = 2 log x
f(x) = 1 and ∅ (x) = sin2 x + cos2 x
f(x) = x and ∅(x) = (√x)2
If f(x) = x2-5x+3, then f(1) =
3
1
0
-1
The period of cos(x)2 is
2π
4π2
π2/4
None of these
The period of f(x) = sin4x + cos4x is
π
π/2
4π
f(a2)
f(a)
f(a+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 = x, y = -x
y = 1 + 1/x
The domain of the function f(x) = log |4 - x2| is
(-2, 2)
R - {2, -2}
{-2, 2}
If f(x) = x2 - 1/x2, f(x) =
-f(1/x)
f(1/x)
-f(x)
f(x2)
