Inputing Values into a Function

🏆Practice domain of a function

Generally, a numerical value is assigned in equations with variables or in mathematical expressions that include variables.

The assignment involves changing the variables in a mathematical expression or equation to specific numerical values.

For example

X=3 X=3

Y=2 Y=2

Z=? Z=\text{?}

X2+Y=Z X^2+Y=Z

32+2=11 3^2+2=11

Answer: Z=11 Z=11

X Y Z By assigning the numerical value, the general form becomes a particular case

By assigning the numerical value, the general form becomes a particular case.

Start practice

Test yourself on domain of a function!

einstein

Given the following function:

\( \frac{5-x}{2-x} \)

Does the function have a domain? If so, what is it?

Practice more now

If you are interested in this article, you may also be interested in the following articles:

Graphical Representation of a Function

Algebraic Representation of a Function

Function Notation

Domain of a Function

Indefinite Integral

Variation of a Function

Increasing Function

Decreasing Function

Constant Function

Functions for Seventh Grade

Intervals of Increase and Decrease of a Function

Table of Values

On the Tutorela website, you will find a variety of articles with interesting explanations about mathematics


Examples and exercises with solutions for assigning numerical value in a function

Exercise #1

Given the following function:

5x2x \frac{5-x}{2-x}

Does the function have a domain? If so, what is it?

Video Solution

Answer

Yes, x2 x\ne2

Exercise #2

Given the following function:

49+2xx+4 \frac{49+2x}{x+4}

Does the function have a domain? If so, what is it?

Video Solution

Answer

Yes, x4 x\ne-4

Exercise #3

Given the following function:

5x \frac{5}{x}

Does the function have a domain? If so, what is it?

Video Solution

Answer

Yes, x0 x\ne0

Exercise #4

Given the following function:

235x2 \frac{23}{5x-2}

Does the function have a domain? If so, what is it?

Video Solution

Answer

Yes, x25 x\ne\frac{2}{5}

Exercise #5

Given the following function:

9x4 \frac{9x}{4}

Does the function have a domain? If so, what is it?

Video Solution

Answer

No, the entire domain

Join Over 30,000 Students Excelling in Math!
Endless Practice, Expert Guidance - Elevate Your Math Skills Today
Test your knowledge
Start practice