Domain & Range Calculator

How This Is Calculated

Domain is every input value the function accepts; range is every output value it can produce. Two restrictions cover nearly every 1st PUC domain question: a denominator can never be zero, and the expression under a square root can never be negative (and must be strictly positive if it's also in a denominator). This calculator applies exactly those rules — no approximation, the same reasoning taught in the Relations & Functions chapter guide.

Want the Full Chapter Explained?

See the complete Relations & Functions guide → — ordered pairs, what makes a relation a function, and worked domain/range examples.