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 \(\log 10000 = 4\) ...

From trigonometry to calculus and vectors to geometry, few students take A-level mathematics thinking it's going to be an easy subject. But for Daily Mail readers who know their sequences from their ...