College Algebra / Unit 5 Alg 234 short lesson, about 20 seconds
Function Notation
Captions available
The idea
Function notation names the machine and its input at once: f(x) is the output of function f at input x.
In practice
In f(x) = 2x + 3, the name is f, the input is x, and f(4) asks for the output at 4.
Where people slip
f(x) is one symbol for an output, not f times x.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
Unlocks
- Nothing yet depends on this.
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