2018-10-18 13:49:55 -0600 | asked a question | Multiplying sparse matrices Can Sage multiply sparse matrices? If so, does it require some special syntax? I've been trying to run the following code: and it hasn't been working. If M is being converted to a dense matrix for multiplication then of course I wouldn't expect this to run. But it shouldn't be hard to do as sparse matrices, right? |

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2018-10-14 16:27:08 -0600 | asked a question | desolve initial condition involving e gives strange answer I'm trying to do some basic differential equations in Sage. When I run the following: The output is My expectation is that there shouldn't by any y(t) term in the output. If I make a seemingly meaningless tweak to my initial conditions: I get the expected output of If I change the initial conditions to [1, e/2], I again get the output I expect. I haven't been able to reproduce this issue with any other example. Maybe the issue just comes in converting Sage's version of e into Maxima? Does anyone know what is going on here? |

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