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ECAT Pre General Science Mathematics Chapter 17 Functions and Limits Online Test MCQs With Answers
Question # 1
Choose an answer
π
2π
π/2
None of these
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Question # 2
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2
0
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Question # 3
f (x) = | x | is a/an
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Injective function
Bijective function
Surjective function
Implicit function
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Question # 4
The area of circle of unit radius =
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0
1
4
π
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Question # 5
The curve f(x,y) = 0 has a central symmetry if
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f(-x,-y)=f(x,y)
f(x,-y)=f(x,y)
f(-x,y)=f(x,y)
f(-x,-y)≠f(x,y)
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Question # 6
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Question # 7
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Question # 8
The period of the function f(x) = sin
4
x + cos
4
x is
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π
π
/2
2
π
None of these
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Question # 9
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 # 10
The period sin
2
θ
is
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π
2
π
2
π
π/2
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Question # 11
tan h x = _________
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Question # 12
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One-one but not onto
One-one and onto
Onto but not one-one
Neither one-one nor onto
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Question # 13
A function F(x) is called even if
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F(x) = F (-x)
F(x) = F(-x)
F(x) = -F(x)
2F(x) = 0
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Question # 14
The range of y=x2 + 1 is the set of non-negative real numbers except
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0≤ y < 1
0 < y < 1
0≤ y≤ 1
0 < y≤1
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Question # 15
The only function which is both even and odd is
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f(x) =α
f(x) = x
f(x) =0
Both A & B
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Question # 16
p(x) = 2x
4
- 3x
3
+ 2x - 1 is polynomial of degree
Choose an answer
1
2
3
4
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Question # 17
If f(x)= x
3
then f(-2) is
Choose an answer
-2
-4
-8
8
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Question # 18
Inverse of the function y-10x is
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y=logx
y=lnx
x=10y
x=10y
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Question # 19
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images
pre-images
constants
none of these
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Question # 20
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Question # 21
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Question # 22
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Question # 23
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0
3
9
-3
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Question # 24
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 # 25
The function f : x→ y defined as f (x) =α∀x∈ X,α∈ y is called
Choose an answer
Constant function
Polynomial function
Identity function
Linear function
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Question # 26
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 # 27
f(x) = C is
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identity function
constant function
linear function
quadratic function
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Question # 28
Sin h
-1
x = _________
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Question # 29
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2
6
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Question # 30
Which of the following function form 1 to itself are bi-jective
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F(x) = x + 3
F(x) = x
5
F(x) = 3x + 2
F(x) = x
2
+ x
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Question # 31
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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