Hello Chris; Thank you... you understood me.... :-)
Sometimes I want to remind what is written on the main "sage-support"... *Guidelines*: 1. only one question per post | 2. descriptive subject title | 3. also describe the desired result and the context of the problem. *Include*: Platform (CPU) and Operating System | Exact version of Sage (command: "version()") Provide copy-paste-ready reproducible commands causing the error. And I focus last saturday-sunday the last sentence... "provide..."... All is about efficiency to answer the help request. For example, If you are not using "sage cloud" then I will not help, because it's an issue about sagemath and not the cloud, where I can check your code and use my limited skills. And I am also grateful to people asking help to "complete" the post, like you did. In my worksheets I use frequently what you put in 1) ... because I WANT to use with symbolic computations. That code can be preparsed too. I do that because I want symbolic results. Example :worksheet in sage cloud, if I want intersection of two lines, I write two symbolics linear equations, and use solve to get a symbolic result, which his a point whose coordinates depends from the symbolic variables. After I write it in python function, always the more symbolic I can (avoiding some specific fields functions,such as absolute(), real()). Only when I need to..I restrict to the field. But you for 2) you restrict to the real field AT FIRST ... advantage is computation done only in that field (here real)...but what will you do if you want to extend to the complex field ... write the code again ? As soon as you use plot() you need parameters in the real field. No more post from me in that thread...you will understand when you can use symbolic or not. Regards Dominique. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
