Increasing and Decreasing Functions
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A function is increasing on an interval when outputs rise as inputs rise within it, and decreasing when outputs fall as inputs rise.
Show
f(x) = x² falls on (−∞, 0) and rises on (0, ∞) — read left to right, downhill then uphill, with the turn at the bottom.
Builds on
- Nothing — this is a starting point.
Unlocks
- Nothing yet depends on this.