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 \(\log 10000 = 4\) ...
Teachers have been asked whether A-level and AS-level maths students should be allowed to use calculators in examinations, says Jessica Shepherd Was it log a x + log a y ≡ log a (xy) or log a x – log ...
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