Quotable maths: Kline Sep 20, 2012 A selection of other posts Jul 15, 2020 Ask Uncle Colin: Why does the $ac$ method work? Oct 24, 2017 Wrong, But Useful: Episode 49 Sep 3, 2012 Secrets of the Mathematical Ninja: Estimating powers of e Apr 9, 2012 Secrets of the Mathematical Ninja: The surprising integration rule you don't get taught in school subscribe via RSS