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Online Tests
Mathematics ECAT Pre Engineering Chapter 17 Functions and Limits Online Test MCQs With Answers
Question # 1
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 # 2
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sin h x
cos h x
sec h x
cosec h x
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Question # 3
Which is not included in the domain of cos
-1
x
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0
1
-1
2
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Question # 4
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Does not exist because f is unbounded
Is not attained even though f is bounded
Is equal to 1
Is equal to -1
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Question # 5
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0
1
-1
none of these
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Question # 6
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Question # 7
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One-to-one and onto
One-to-one but not on to
Onto but not one-to-one
Neither one-to-one nor onto
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Question # 8
The function discontinuous at x = 0 is (1) tan x (II) cot x (III) sec x (iv)cosec x)
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I & III
I & IV
II & IV
II & III
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Question # 9
The set of points {(x,y)|y = f(x),∀x∈} is called
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Relation
Graph of f
Function
All are correct
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Question # 10
If f(x) = x
2
then f(2) is
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-2
2
4
-4
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Question # 11
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2
4
8
12
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Question # 12
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 # 13
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0
3
9
-3
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Question # 14
If f(x) = tan x then f(0) is
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0
1
1/2
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Question # 15
Sin h
-1
x = _________
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Question # 16
If f(x) = -x
3
then f(-2) is
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-2
-4
-8
8
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Question # 17
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-1
1
2
-2
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Question # 18
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0
1
-1
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Question # 19
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Question # 20
If f(x) = x
3
- 2x
2
+ 4x -1, then f(-2) = ?
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0
-25
5
45
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Question # 21
x = secθ,y = tanθ are the parametric equations of
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Circle
Hyperbola
Ellipse
parabola
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Question # 22
sin h x = ___________
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Question # 23
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 # 24
f(x) = x is
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trigonometric function
exponential function
quadratic function
identify function
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Question # 25
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 # 26
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Question # 27
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R/[0,4]
R/(0,4)
(0,4)
[0,4]
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Question # 28
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Question # 29
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Question # 30
f(x) = C is
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identity function
constant function
linear function
quadratic function
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Question # 31
The domain of y =√(x^2-9) is
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R
(0 , +∞)
(-∞ , -3 )∪ (3 , +∞)
(0 ,∞)
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