Domain and Range Calculator (Free, with Graph)
Use this free domain and range calculator to find the domain and range of common functions — linear, quadratic, square root, rational, exponential, and logarithmic — in interval notation, with a graph.
How to use it
- Pick the function type.
- Enter its parameters (for example a, h, k).
- Press Find domain & range.
Quick rules
Square roots need a non-negative radicand; logs need a positive argument; rational functions exclude the value that makes the denominator zero. The graph helps you see the range.
Original price was: $109.99.$54.99Current price is: $54.99.
Related: the Function Grapher and more free math calculators.
Frequently asked questions
What is interval notation?
A compact way to write sets of numbers, like [3, ∞) for all numbers 3 and larger, or (−∞, 2) ∪ (2, ∞) for all numbers except 2.
Original price was: $109.99.$54.99Current price is: $54.99.
Which function types are supported?
Linear, quadratic, square root, rational, exponential, and logarithmic forms.
Original price was: $109.99.$54.99Current price is: $54.99.
Does it graph the function?
Yes, so you can see why the range is what it is.
Original price was: $27.99.$17.99Current price is: $17.99.
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