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ECAT Pre General Science Mathematics Chapter 17 Functions and Limits Online Test MCQs With Answers
Question # 1
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Question # 2
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[0,1[
[0, 1]
]0, 1[
None of these
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Question # 3
A rule that assigns to each elements x in X a unique element y in Y is called a ____________
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domain
range
function
none of these
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Question # 4
f(x) = x
3
is:
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an odd function
an even function
an implicit function
a quadratic funtion
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Question # 5
The area of circle of unit radius =
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0
1
4
π
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Question # 6
If f(x)= x
3
then f(-2) is
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-2
-4
-8
8
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Question # 7
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0
-4
none of these
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Question # 8
An even function is symmetric about the line
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y = x
x = 0
y = -x
y = 0
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Question # 9
f(x) = 3x
4
-2x
2
+ 7 is:
Choose an answer
an even function
an odd function
an even and implicit function
neither even nor a odd
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Question # 10
If f(x) = x
3
- 2x
2
+ 4x -1 then f(0) is
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0
1
-1
none of these
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Question # 11
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 # 12
If f(x) = x + 1 then f(z
2
-1) is
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z
2
z
2
+ 2
z
2
- 2
none of these
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Question # 13
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-2
-1
1
2
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Question # 14
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Question # 15
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2
-1
8
not defined
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Question # 16
The value of x which is unchanged by the mapping in the function defined by f ; x⟶ x
2
+ 5x -5 for x> 0 is
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1
5
-5
-1
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Question # 17
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image
pre-image
constant
none of these
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Question # 18
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 # 19
f (x) = | x | is a/an
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Injective function
Bijective function
Surjective function
Implicit function
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Question # 20
Every relation, which can be represented by a linear equation in two variables, represents a
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Relation
Cartesian product
Function
Graph
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Question # 21
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1
0
-2
3
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Question # 22
If the domain of the function f: x⟶ 2x
3
+ 1 is {-1,2,3}, the range of the function is
Choose an answer
{3,2,5}
{1,3,9}
{-1,-2,-3}
{3,9,19}
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Question # 23
The range of inequality x + 2 > 4 is
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(-1, 2)
(-2, 2)
(1,
∞
)
None
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Question # 24
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2
1
5
0
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Question # 25
If f(x) = x
2
- x then f(2) is
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4
6
2
0
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Question # 26
The domain of f(x) = log x is
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[0,
∞
]
(0,
∞
)
[0,
∞
[
[
∞
,
∞
]
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Question # 27
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 # 28
x = secθ,y = tanθ are the parametric equations of
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Circle
Hyperbola
Ellipse
parabola
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Question # 29
Composition of functions is
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Non-commutative (fg ≠ gf)
non-associative [8(fh) ≠(8f)h]
Commutative (fg = gf)
f of-1≠ 1
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Question # 30
The domain and range of a trigonometric function can be allocate by their
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graph
Continuity
Discontinuity
Periods
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