8 / 6 / 12 SOME MORE FUNCTIONS

Some important concepts to study functions:

mathsisfun.functions-odd-even  

mathsisfun.functions-increasing

mathsisfun.functions-maxima-minima

Here, you'll find some useful graphs, so that, you can try to study their functions.

mathsisfun.functions-common

But, remember that for a complete study of the function you'll have to wait one more year. 

To graph functions, you can use this link (or another one you like better):

meta-calculator

QUESTION OF THE WEEK

CAN YOU GUESS?...

WHAT'S THE DOMAIN AND RANGE OF THESE FUNCTIONS?

a) y = | x |^-1/2

b) y = (-x)^-1/2

30 / 5 / 12 INTRODUCTION TO FUNCTIONS

To introduce functions it's very useful to remember some concepts:

mathsisfun.com/sets/function

To graph functions you can use this link:

mathsisfun.com/data/function-grapher

But, it´s possible to work with a graphic calculator. There are some of them on line:

meta-calculator 

wiris 

23 / 5 / 12 INTRODUCTION TO STRAIGHT LINES

STRAIGHT LINE FORMS

mathonweb.lines