The Range
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
The range of a function is the set of all outputs the domain actually produces.
Show
f(x) = x² takes in every real number but only puts out 0 and up: range [0, ∞). Squares are never negative.
Watch for
The range is earned by the domain, never assumed.
Builds on
- Nothing — this is a starting point.
Unlocks
- Nothing yet depends on this.