Which line graph, equations and physical processes go together?
[problem*] Succession in Randomia By tossing a coin one of three princes is chosen to be the next King of Randomia. Does each prince have an equal chance of taking the throne?
[problem*] Calculus Countdown Can you hit the target functions using a set of input functions and a little calculus and algebra?
[problem*] Operating machines What functions can you make using the function machines RECIPROCAL and PRODUCT and the operator machines DIFF and INT?
[problem**] Area L Draw the graph of a continuous increasing function in the first quadrant and horizontal and vertical lines through two points. The areas in your sketch lead to a useful formula for finding integrals.
[Featured Solution] 2009 challenge 2009 was clearly an interesting year! Find out which mathematical fact about 2009 we found most interesting.
