"First we've seen what limits and then we derived and what you saw and fully and finally do and you see why. I intend to do a different kind of mathematics, starting from its practical side. From practice math and then back to practice. During the same vision presents Chapter primitive. If we make it or not please do appreciate you. Did I would ask you to come with suggestions for lessons in your comments for feedback as well. "br Professor John Bear, Bacau, Romania.