Numbers and algebra
Function
A rule that assigns exactly one output to every permitted input.
Common notation y = f(x)
In one sentence
What does Function mean?
A rule that assigns exactly one output to every permitted input.
How it is written
y = f(x)
A compact example
For f(x)=2x+1, the input x=3 produces f(3)=7.
Other names and search terms
mapping.
Clear answers
Questions about Function
What does Function mean in mathematics?
A rule that assigns exactly one output to every permitted input.
How is Function written?
A common notation is y = f(x).
What is an example of Function?
For f(x)=2x+1, the input x=3 produces f(3)=7.