NO. TITLE PAGES1. Acknowledgement 32. Objective 43. All about function 5 – 104. Part 1 11 - 175. Part 2 18 – 206. Part 3 21 – 267. Further exploration 27 - 308. Reflection 319. Conclusion 3210. Bibliography 33

DEFINITION OF FUNCTIONA function relates an input to an output.

Names

First, it is useful to give a function a name.

The most common name is "f", but we can have other names like "g" ... or even "marmalade" if we want.

But let's use "f":

We say "f of x equals x squared"

what goes into the function is put inside parentheses () after the name of the function:

So f(x) shows us the function is called "f", and "x" goes in

It is like a machine that has an input and an output.

And the output is related somehow to the input.  f(x)  "f(x) = ... " is the classic way of writing a function. 

And thereare other ways, as you will see!