Toolkit Functions

Constant Function

For the constant function $f(x)=c$ the domain consists of all real numbers; there are no restrictions on the input. The only output value is the constant $c$, so the range is the set $\{c\}$ that contains this single element. In interval notation, this is written as $[c,c]$, the interval that both begins and ends with $c$.

Domain: $(-\infty ,\infty )$

Range: $[c,c]$

Resources

• Domain Range and Toolkit Functions, Book Chapter
• Guided Notes
• Toolkit Functions, Lumen Learning