A scientific calculator has two 'log' buttons on it. These are marked log and ln. The log key is used for calculations of the form \({\log _{10}}x\). For example, to work out that \(\log 10000 = 4 ...

Laws of logarithms and exponents Revise what logarithms are and how to use the 'log' buttons on a scientific calculator Solving polynomial equations The nature and co-ordinates of roots can be ...