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It is essential to your understanding of mathematics at this level that you learn how to use mathematical symbols and notation precisely. Written mathematics is a language with rules and conventions just like any other language. If you do not use it correctly then other people (most importantly examiners) will not understand what you mean.
The following notation will be used in all mathematics examinations.

Software/Applets used on this page

Student scores
This page uses the DragNDrop applet written specifically for the site.
It is used on o-test pages, where you can repeat the test as often as you like and if you are logged in using a personal ID your score will be saved. You can view all your saved scores by clicking on your user name and following the links there. For more information on this see Help on assessment