Apparently, this user prefers to keep an air of mystery about them.
13 Simplification of expressions containing radicals sep 14 '10
11 If the product of an invertible symmetric matrix and some other matrix is symmetric, is that other matrix also symmetric? jan 21 '11
7 What does E mean in 9.0122222900391E-5? oct 7 '10
5 Area's of rectangle and circle apr 13 '11