Mathematics MCQS for class 12 with Answers Chapter 1

If f(x)=x² +1 then domain of f is:

Set of integers

Set of natural numbers

Set of all real numbers

Set of irrational numbers

If f : X

None of thsese

Both (a) & (b)

Range of f

Domain of f

If a function f(x) is not continuous at x = c, then it is called ————-at c.

Explicit

Discontinuous

Linear

None

If y is easily expressed in terms of the independent variable x, then y is called a/an _____________ function of x

Constant

Explicit

Implicit

Inverse

If (x – 2, 0) = (1, 0), then x =

1

5

3

2

Polynomial function P(x) has the domain:

Subset of real numbers

Both (a) & (b)

Set of natural numbers

None of these

For any set X, a function 1 : X

None of these

Quadratic function

Linear function

An identity function

If (x) = |x| then range of ? is

[0,2]

[-?,0]

[-1,1]

[0,?]

If f(x) = 2x + 1, then f of (x) is equal to

4x – 1

4x + 1

4x + 3

4x – 3

d/dx sin x³is equal to

3x²cos x³

cos x³

x²sin x³

-cos x³