The domain of a function can also be determined by identifying the input values of a function written as an equation.The domain of a function can be determined by listing the input values of a set of ordered pairs.
The domain of a function includes all real input values that would not cause us to attempt an undefined mathematical operation, such as dividing by zero or taking the square root of a negative number.In interval notation, we use a square bracket \,\left(0,\text000. We can write the domain and range in interval notation, which uses values within brackets to describe a set of numbers.
