For anyone looking for a good resource for improving their mathematical problem solving (especially for the Olympiad level), I highly recommend the Art of Probl

For anyone looking for a good resource for improving their mathematical problem solving (especially for the Olympiad level), I highly recommend the Art of Problem Solving wiki. [1] That homepage isn't very informative, but you can search for any topic and find explanations and problems that can be solved from that. For example: radical axis [2] If you're looking for a book, The Art and Craft of Problem Solving by Paul Zeitz is the most recommended. [1] http://www.artofproblemsolving.com/wiki/index.php/Main_Page http://www.artofproblemsolving.com/wiki/index.php/Main_Page [2] http://www.artofproblemsolving.com/wiki/index.php/Radical_axis http://www.artofproblemsolving.com/wiki/index.php/Radical_ax...