1) What is Function Notions?

2) Why is Function Notation used?

3) What does it mean by the expression f (x) ?

function notation is the way a function is written. It is meant to be a precise way of giving information about the function without a rather lengthy written explanation.

1. function notation is the way a function is written.

2. the use of function notation makes it clear which is the dependent variable and which is the independent variable in a functional relationship.

3. It means a formula, named f, has x as its input variable". It does not mean "multiply f and x''.