Restricted domain — Precalculus, what it means and where it is taught
The stretch of the original function kept so that it is one-to-one.
Taught in Precalculus.
Where it is taught
What it rests on
Work through these first if this one does not settle.
- One-to-one — No two inputs share an output. Only a one-to-one function has an inverse that is itself a function.
- Function — A rule pairing each input with exactly one output.