Question

Briefly explain the importance of the inequality signs (

Answer 1

To exclude the values that are not in the domain/range.

Step-by-step explanation:

When a less than sign is used, it means the value is excluded in the range/domain of the function.

However, when less than or equal to sign is used, it means the value is included in the range/domain of the function.

Take for an example:

`\left\lbrace x<5|x\text{ is a whole number}\right\rbrace`

The values of x will start taking values from 4.

However in the case:

`\left\lbrace x\leqslant5|x\text{ is a whole number}\right\rbrace`

The values of x will start taking values from 5.