Question # 1

A function in which the variable appears as exponent is called:

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An identity function

A logarithmic function

an exponential function

A rational function

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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sin h x

cos h x

tan h x

cot h x

The domain of f(x) = log x is

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[0,∞]

(0,∞)

[0,∞[

[∞,∞]

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2

-2

none of these

f(x) = x is

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trigonometric function

exponential function

quadratic function

identify function

if f(x) = x³ -3x² +5x -1, then f(-√2)=

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7+7√2

3+3√2

-7-7√2

-3-3√2

If f(x) = x³- 2x²+ 4x -1, then f(-2) = ?

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0

-25

5

45

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0

-4

none of these

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

If y is an image of x under the function f, then we write

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y = f(x)

x = f(y)

y = x

none of these

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

A rule or correspondence that assigns to each element x in X a unique element y in Y is called a function from

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X to X

X to Y

Y to X

none of these

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0

1

none of these

If f(x) = x³- 2x²+ 4x -1 then f(0) is

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0

1

-1

none of these

The function f(x) =|x| is a/an_______function

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Even

Odd

Both even as well as odd

Neither even nor odd

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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

f(x) = log x + 3 is a

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trigonometric function

algebraic function

exponential function

logarithmic function

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

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