Prove me I'm wrong !

We've been studying about proving and practicing a lot of examples every meeting. And I'm telling you it ain't easy but the more we practice the more we understand it little by little =) which is a good thing I guess (?) This past few days I can't really focus on my math works because every time I think of the other topics from math and other subject since quarter exam is approaching they would just totally mix up on my mind X_X . However, I'm really trying my best to focus in every thing one by one. All iz well.