The Great Straight Lines debate Oct 24, 2016 * Edited 2016-10-24 to add categories, just for Cav. A selection of other posts Sep 9, 2020 Ask Uncle Colin: An Integral The Tutor Couldn't Do Nov 27, 2017 A quadratic simultaneous equation Jun 7, 2017 Ask Uncle Colin: about Chebyshev's Equation Oct 12, 2016 Ask Uncle Colin: A Huge Power Of Two subscribe via RSS