Next exams: Wednesday 2nd May, Thursday 3rd May, Wednesday 9th May, Thursday 17th May, Friday 18th May

## Summary/Background

In fact, use of logarithms is not necessary to solve the above equations. Can you see why?

## Software/Applets used on this page

## Glossary

### solve

To find the answer or solution to a problem.

### union

The union of two sets A and B is the set containing all the elements of A and B.