Apparently, this user prefers to keep an air of mystery about them.
4 Finding the ratio of areas produced by perpendiculars from the $3$ sides of an equilateral triangle. dec 21 '13
3 point deflecting off of a circle dec 8 '13
2 How to simplify this using boolean algebra? dec 3 '13
2 Finding the minimum of a function of two variables dec 26 '13