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ECAT Mathematics Chapter 17 Functions and Limits Online Test MCQs With Answers
Question # 1
The range of inequality x + 2 > 4 is
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(-1, 2)
(-2, 2)
(1,
∞
)
None
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Question # 2
If f (x) is defined and continuous then f (x) is always
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Rational function
Trigonometric function
Logarithmic function
All are correct
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Question # 3
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0
1
1/2
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Question # 4
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0
1
2
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Question # 5
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0
1
-1
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Question # 6
if f(x) = x
3
-3x
2
+5x -1, then f(-√2)=
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7+7√2
3+3√2
-7-7√2
-3-3√2
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Question # 7
The periods of the function f(x) = x[x] is
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1
2
Non periodic
None of these
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Question # 8
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(1,7/3)
(1, 7/5)
(1, 11/7)
(1, 3/5)
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Question # 9
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0
1
-1
none of these
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Question # 10
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Question # 11
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 # 12
A function from A to B is denoted by
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f: A→ B
f: B → A
f: → A :B
f → A→ B
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Question # 13
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image
pre-image
constant
none of these
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Question # 14
Sin h
-1
x = _________
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Question # 15
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Question # 16
f(x) = C is
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identity function
constant function
linear function
quadratic function
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Question # 17
f(x) = 3x
4
-2x
2
+ 7 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 # 18
sec h x = ________
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Question # 19
If f(x) = -x
3
then f(-2) is
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-2
-4
-8
8
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Question # 20
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Question # 21
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Question # 22
For f(x) = x2, what is the value of f(a) +f (-a) in terms of a?
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3a2
2a2
2a
-7a
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Question # 23
If f(x) = x
2
then f(2) is
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-2
2
4
-4
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Question # 24
In the function f: A⟶B, the elements of a are called
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Images
Pre-images
ranges
Parameters
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Question # 25
Domain of y = scs x is
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All real numbers except π/2 + n*π
R
All negative integers
None of these
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Question # 26
The function f(x) =|x| is a/an_______function
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Even
Odd
Both even as well as odd
Neither even nor odd
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Question # 27
If a tangent line touches the function y = f (x) in more than one point then y = f (x) is
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Periodic
Surjective
Bijective
Injective
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Question # 28
A rule or correspondence that assigns to each element x in X a unique element y in Y is called a function from
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X to X
X to Y
Y to X
none of these
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Question # 29
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2
1
5
0
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Question # 30
If f(x) = x
2
- x then f(2) is
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4
6
2
0
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Question # 31
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2
0
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