One more: I am sunning sage in ~/Projects/SAGE/sage-4.1 which is the root of the source tarball. as per http://www.sagemath.org/doc/tutorial/programming.html#loading-and-attaching-sage-files, I created 'example.sage' in this directory and loaded and attached it. contrary to the tutorial, no file named 'example.sage.py' was created in this directory. No such file exists anywhere in my home directory tree, ~/.
brett On Aug 11, 9:24 pm, brettpim <br...@math.carleton.ca> wrote: > I have had some issues in the tutorial but I am a newbie so I wanted > to check here before thinking these were errors in Sage rather than > errors in me. > > 1) athttp://www.sagemath.org/doc/tutorial/tour_algebra.html#euler-s-method... > it seems to met that z(1) \aprox 0.65 NOT 0.75 > > 2) regarding polynomials in the > tutorial:http://www.sagemath.org/doc/tutorial/tour_polynomial.html > > Does the following session: > > sage: R = QQ['t'] > sage: t in R > > --------------------------------------------------------------------------- > NameError Traceback (most recent > call last) > > /home/brett/Projects/SAGE/sage-4.1/<ipython console> in <module>() > > NameError: name 't' is not defined > sage: S.<t> = QQ['t'] > sage: t in S > True > sage: t in R > True > > contradict the statement "However, this does not define the symbol t > for use in Sage, so you cannot use it to enter a polynomial (such as > t^2+1) belonging to R"? > > 3) In Linear Algebra (http://www.sagemath.org/doc/tutorial/ > tour_linalg.html#sparse-linear-algebra) I am not sure what "The multi- > modular algorithm in Sage is good for square matrices (but not so good > for non-square matrices):" is supposed to mean since I do not notice > any difference in output. What should I expect to see differently? > > 4) In "Timing commands" (http://www.sagemath.org/doc/tutorial/ > interactive_shell.html#timing-commands) the difference between > "%time" and "time" is never explained. Calling time? and %time? seem > to indicate that these are the same, but the tutorial's switch from > one to the other with no explanation is a bit confusing. > > thanks > brett --~--~---------~--~----~------------~-------~--~----~ To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
