Question # 1

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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0

1

8

∞

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2

-2

none of these

f(x) = x³is:

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an odd function

an even function

an implicit function

a quadratic funtion

If the function y=2x -3, what is the preimage of 11?

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11

7

5

2

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f(x) = x²

f(x²) = x

f(x) = x

none of these

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(1,7/3)

(1, 7/5)

(1, 11/7)

(1, 3/5)

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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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0

-4

none of these

Domain of cosh x is

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R

R -{0}

[1,∞)

[0,∞)

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0

1

2

1/2

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2

6

f(x) = log x + 3 is a

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trigonometric function

algebraic function

exponential function

logarithmic function

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0

1

none of these

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

If f(x) = x²then f(0) is

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0

1

2

none of these

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If f(x) = x²-x then f(1) is

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0

1

2

3

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-1

1

2

-2

sin h x = ___________

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A function from X to Y is written as

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f : X to Y

f : Y to Y

If f(x) = (-x)²then f(-2) is

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0

2

-4

4

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0

1

-1

none of these

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

If f(α) = b2 and g (c) =d where c=b2 then (gof)(a) is

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α

c

b

d

If y=f(x) is a function then y is called

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dependent variable

independent variable

constant

none of these

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images

pre-images

constants

none of these

If f(x) = x²- x then f(-2) is

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4

6

2

0

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If f(x) = x + 1 then f(z²-1) is

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z²

z²+ 2

z²- 2

none of these

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Mathematics ECAT Pre Engineering Chapter 17 Functions and Limits Online Test MCQs With Answers

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