The power of symbolic computation is the name of the heteraga. It doesn't do it by default, so that in the notebook, it does actually do it bydefaultyou not in the terminal or the re and the terminal, you need to get around this. Andrea: Let me talk people through just a couple of things because i think it's a little hard to understand how this work. A, if you keep scrolling down, you can see, i think, limits and differential equations. Yes, lo, right?