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Mathematics ECAT Pre Engineering Chapter 17 Functions and Limits Online Test MCQs With Answers
Question # 1
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Question # 2
Express the perimeter P of square as a function of its area A?
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P = 4√A
P =√A
P = 2A
P =π√A
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Question # 3
If f(x) = x
2
then f(-2) is
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-2
2
4
-4
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Question # 4
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sin h x
cos h x
sec h x
cosec h x
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Question # 5
f(x) = x is
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trigonometric function
exponential function
quadratic function
identify function
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Question # 6
If the domain of the function f: x⟶ 2x
3
+ 1 is {-1,2,3}, the range of the function is
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{3,2,5}
{1,3,9}
{-1,-2,-3}
{3,9,19}
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Question # 7
The range of inequality x + 2 > 4 is
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(-1, 2)
(-2, 2)
(1,
∞
)
None
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Question # 8
If f (x) = 2x+1 then fof (x) = _______;
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4x+3
2x +3
4x +1
None of these
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Question # 9
tan h x = _________
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Question # 10
Point (2,0) lies on trigonometric function f(x)=______;
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sinx
cosx
tanx
secx
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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
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0
1
2
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Question # 13
cos h
2
x + sin h
2
x
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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 # 14
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1/8
1/2
1/4
1/6
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Question # 15
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Question # 16
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0
1
8
∞
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Question # 17
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Question # 18
Domain of cosh x is
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R
R -{0}
[1,∞)
[0,∞)
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Question # 19
Which is an explicit function
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y = x
2
+ 2x - 1
x
2
+ xy + y
2
= 2
x
2
+ y
2
= xy + 2
All are
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Question # 20
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 # 21
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 # 22
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0
1
1/2
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Question # 23
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range of f
domain of f
both (a) and (b)
none of these
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Question # 24
sec h x = ________
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Question # 25
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3/4
r
v
None of these
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Question # 26
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 # 27
The domain of y = cos-1 x is
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-∞ < x < ∞
-1≤ x≤ 1
x≤ -1 or x ≥ 1
None of these
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Question # 28
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Question # 29
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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
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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