C4 Integration Quiz (tough stuff) Jun 11, 2013 [mtouchquiz 13] A selection of other posts Jul 1, 2015 Ask Uncle Colin: Is the Fibonacci series witchcraft? Sep 29, 2014 Estimating $e$ Aug 29, 2013 Wrong, But Useful: Episode 6 Sep 17, 2012 The Lives* of the Mathematical Ninja: Srinivasa Ramanujan subscribe via RSS