Excluded value — Algebra II, what it means and where it is taught
An input that makes the denominator zero. It can never be in the domain.
Taught in Algebra II.
Where it is taught
What it rests on
Work through these first if this one does not settle.
- Domain — The set of allowed inputs.
What uses it later
This idea is needed for:
- Vertical asymptote — A vertical line the graph approaches but never reaches, at an excluded value that does not cancel.