Staff

Please select a resource from the list below.

Quick Reference

• Negative and fractional powers
  Sometimes it is useful to use negative and fractional powers. These are explained in this leaflet.
• Powers and roots
  Powers are used when we want to multiply a number by itself repeatedly.
• The exponential constant e
  The letter e is used in many mathematical calculations to stand for a particular number known as the exponential constant. This leaflet provides information about this important constant, and the related exponential function.
• The laws of indices
  When a number is to be multiplied by itself, a power or index can be used to write this compactly. In this leaflet, we remind you of how this is done, and state a number of rules, or laws, which can be used to simplify expressions involving indices.

Teach Yourself

• Indices or Powers
  This is a complete workbook on Indices covering definitions, rules and lots of examples and exercises. It can be used as a free-standing resource, or can be read in conjunction with mathtutor - the companion on-disk resource.

Test Yourself

• Diagnostic Test - Powers
  Diagnostic test for powers and indices.
• Exercise - Powers
  Online exercise for powers.

Video

A transcript of each video should be available in the Teach Yourself section above.

(This site uses Windows Media technologies from Microsoft to deliver video streams. Streaming facilities are kindly provided by University of Portsmouth Creative Technologies, http://stream.port.ac.uk)

These videos require Windows Media Player (v10).

Please note: You may experience trouble with more recent upgrades to Internet Explorer (now v.7) and Media Player (now v.11). These no longer support streaming from the mms servers used by mathcentre, so we are recommending that you uninstall IE7 (IE6 lies underneath) and replace the new version of WMP with the fully functioning v.10 (you may need to find a download via google after uninstalling v.11). All those that have done this have reported back that everything is working again.

• Powers
  A knowledge of powers, or indices as they are often called, is essential for an understanding of most algebraic processes. In this section you will learn about powers and rules for manipulating them through a number of worked examples. (Mathtutor Video Tutorial)