Maximum and Minimum Values
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A quadratic function's extreme value is its vertex output k: a minimum when the parabola opens up, a maximum when it opens down.
Show
x² − 4x + 3 bottoms out at −1; g(x) = −2x² + 8x peaks at g(2) = 8 — the sign of a picks which story.
Builds on
- Nothing — this is a starting point.
Unlocks
- Nothing yet depends on this.