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.
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
[2] http://www.artofproblemsolving.com/wiki/index.php/Radical_ax...