J.K. a math whiz?

One of the concepts I just read about and realized I don't know for tomorrow's Linear Algebra/Differential Equations test is the Wronskian. Apparantly it is a determinent made from functions and their derivatives, but it just made me want to play Quidditch. I won't be able to do that, but when I see this question on the test I'm going to begin to solve the problem incorrectly, then write 'Wronski Feint' in big letters and proceed to do it wrong anyway, because I'm dumb like that.

post script
I tried to flag that article, because it claimed a Pole could create a sound mathematical theorem, but it wouldn't let me. Ten bucks says the guys' parents moved from Russia or something.

Check it.