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ECAT Pre General Science Mathematics Chapter 17 Functions and Limits Online Test MCQs With Answers
Question # 1
If f(x)= x
3
then f(-2) is
Choose an answer
-2
-4
-8
8
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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
The trigonometric function are continuous whenever
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They are defined
their limit exist
Their period is given
All are incorrect
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Question # 4
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0
1
1/2
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Question # 5
If f(x) = x
2
then f(2) is
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-2
2
4
-4
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Question # 6
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 # 7
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Question # 8
Which is not included in the domain of cos
-1
x
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0
1
-1
2
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Question # 9
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Question # 10
The range of the function f : x→ y is defined by
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{x| y = f (x) ∀x∈ X ∧y∈y}
{(x,y) |y = f (x)∀x∈ X}
{y|y = f (x) ∀x∈ X ∧y∈y}
Y
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Question # 11
Graph of the question x
2
+ y
2
= 4 is
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A circle
An ellipse
A parabola
A square
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Question # 12
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Question # 13
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 # 14
The domain of y =√(x^2-9) is
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R
(0 , +∞)
(-∞ , -3 )∪ (3 , +∞)
(0 ,∞)
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Question # 15
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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Question # 16
In common logarithm the base is
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1
0
10
e
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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
The period sin
2
θ
is
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π
2
π
2
π
π/2
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Question # 19
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Question # 20
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sin h x
cos h x
tan h x
cot h x
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Question # 21
Sin h
-1
x = _________
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Question # 22
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image
pre-image
constant
none of these
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Question # 23
f(x) = 1 is
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identity function
constant function
linear function
quadratic function
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Question # 24
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 # 25
f(x) = C is
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identity function
constant function
linear function
quadratic function
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Question # 26
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0
1
8
∞
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Question # 27
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 # 28
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2
6
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Question # 29
If f(x) = x
2
then f(0) is
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0
1
2
none of these
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Question # 30
The behavior of trigonometric function is called
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Continuity
Discontinuity
Periodicity
Smoothness
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