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 a relation in which each input leads to exactly one output; one input, one answer, every time.
Show
Each account number pays out exactly one balance — a function. One number paying two balances would break the bank and the definition.
Watch for
Two inputs may share an output; one input may never split.
Builds on
- Nothing — this is a starting point.
Unlocks
- Nothing yet depends on this.