If f (x) = and g (x) = 2x2 + 3, then (f + g) (x) =
3x2 + 4
+ 2x2 + 3
- 2x2 - 3
- 2x2 + 3
Range of f (x) = is
(0, ∞ )
(0, 5 )
(5, ∞ )
(-5, 5 )
Range of function f (x) = is.
( -∞, 1 )
(-∞, 1 ]
(1, ∞ )
(0, ∞ ]
Sum of identity function and modulus function is.
If f (1 + x) = x2 + 1, then f(2 - h) =
h2 - 2h + 2
h2 + 2h + 2
h2 - 2h + 4
h2 + 2h + 4
If f(x) = x + 1/x , then which of the following is correct?
[ f (x) ]3 = f (x)3 + 3 f (x)
[ f (x) ] 3 = f (x)3 - 3 f (1/x)
[ f (x) ]3 = f (x 3 )+ 3 f (1/x)
f (x)3 = (f [x])3 - 3 f (x)
The function f(x) = -x is.
Even
Odd
Neither even nor odd
None of these
f (x) = f (1/2 ) =
3/4
-3/4
3
Not defined
Domain of f (x) = is
R - { -2, 2 }
R - {-1, 1 }
R - { 2 }
R
If f(x) = x2 - 2x + 3, find f(3)?
1
2
6
