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ECAT Pre General Science Mathematics Chapter 17 Functions and Limits Online Test MCQs With Answers
Question # 1
Domain of cosh x is
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R
R -{0}
[1,∞)
[0,∞)
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Question # 2
What is range of the function g (x) =|x-3|?
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[0 ,∞ )
(0 ,∞)
(-∞ ,3]
[0,∞)
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Question # 3
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2
0
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Question # 4
If f(x) = -x
3
then f(-2) is
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-2
-4
-8
8
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Question # 5
f(x) = 2
x
+ 3 . 2
2x
+ 5 is
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trigonometric function
algebraic function
exponential function
logarithmic function
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Question # 6
A function in which the variable appears as exponent is called:
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An identity function
A logarithmic function
an exponential function
A rational function
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Question # 7
If f(x) = (-x)
2
then f(-2) is
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0
2
-4
4
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Question # 8
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π
2π
π/2
None of these
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Question # 9
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image
pre-image
constant
none of these
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Question # 10
If x is an image of y under the function f. This can be written as
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y = f(x)
f(x) = 0
x = f(y)
f(y) =0
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Question # 11
f(x) = ax + b will be a constant function if
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a = 1 , b = 1
a = 1 , b = 0
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Question # 12
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Question # 13
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f(x) = x
2
f(x
2
) = x
f(x) = x
none of these
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Question # 14
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0
1
-1
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Question # 15
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Question # 16
In common logarithm the base is
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1
0
10
e
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Question # 17
f(x) = sin x is:
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an odd function
an even function
an implicit function
an exponential function
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Question # 18
The largest possible domain of the function:
y=√(x ) is:
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(0 ,∞)
12
(3 , 12)
( 3 ,∞)
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Question # 19
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Does not exist because f is unbounded
Is not attained even though f is bounded
Is equal to 1
Is equal to -1
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Question # 20
If f(x) = x
3
- 2x
2
+ 4x -1 then f(2) is
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7
-16
16
-9
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Question # 21
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sin h x
cos h x
tan h x
cot h x
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Question # 22
The area of circle of unit radius =
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0
1
4
π
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Question # 23
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images
pre-images
constants
none of these
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Question # 24
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Question # 25
f(x) = 2x
2
+ 3x + 5 is a
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trigonometric function
algebraic function
exponential function
logarithmic function
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Question # 26
tan h x = _________
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Question # 27
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Question # 28
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0
1
none of these
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Question # 29
f(x) = 3x/x
2
+ 1 is:
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an even function
an odd function
an even and implicit function
neither even nor a odd
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Question # 30
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-2
-1
1
2
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Question # 31
The domain of the function x/x
2
-4 is given by
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R
R + 2
[R - (
+
2)
R-4
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