Absolute Value Inequalities: Less Than
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
For positive k, the inequality |X| < k means −k < X < k: the inside expression is trapped within k of zero.
Show
|x| < 5 unpacks to −5 < x < 5, the interval (−5, 5). Test x = 0: inside and true; x = 6: outside and false.
Builds on
- Nothing — this is a starting point.
Unlocks
- Nothing yet depends on this.