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

Microsoft Excel is a powerful spreadsheet program that can be used for a variety of tasks, including basic math. Here's how to use Excel as a calculator to perform basic arithmetic operations such as ...