The inverse of the function
None of these
A function f : X → X is called an identity function if :
f ( x ) = c , where C is some constant
f (x ) = x
f ( x ) = 1
The range of the function is.
( -∞, - 1/4 )
R - { - 1/4, - 1/ 20 }
[ - 1/20, ∞ )
A function y = f ( x ) is said to be odd if _______.
f ( - x ) = - f (x )
f ( -x ) = f ( x )
f ( x ) = - f (x )
f ( x ) = f (x )
Which of the following function is periodic in R ?
f ( x ) = log x
f ( x )= ex
f (x ) = x - [x ] where [ x ] denotes the greatst integer ≤ x
f ( x ) = [ x ] + x
Let f: x → y be a function. Then if R ( f ) ⊆ y,f is said to be ______.
Into function
Onto function
One - one function
Sin -1 ( cos x ); 0 ≤ x < 1, is equal to
x - π
x - π/2
π/2 -x
π - x
A function y = f ( x ) is said to even if _______.
f ( x ) = - f ( x )
f ( x ) = f ( x )
The domain of th function where [x ] denotes the greatest integer less than or equal to x, is ______
(0, ∞ )
(-∞, 0)
( -∞, ∞ )
Which of the following is false ?
| x + y | ≤ | x | + | y |
| x + y | ≥ | x | - | y |
| x - y | ≤ | x | + | y |
| x - y | ≤ | x | - | y |