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A duck walks into a bar. Animal control is promptly called and the duck is released into a near by park.


Oct
16
comment Error with comments inside and expression
@Mr.Wizard: I don't understand the logic behind removing the bugs tag anyway: I think of the tags as a tool to find topics, and so when people think it's a bug (like me, even if it's not true), then this helps. It doesn't belong there just when you treat the tag as classifying note. I don't how the StackExchange government sees it.
Oct
16
comment Error with comments inside and expression
"play a little": At the position I indicated, switching between ", z (", ",z (", " ,z(", ",z(" in various orders and hitting return each time. And I'm not a computer person, I don't like to update things that work because sometimes there is something to fix afterwards, while I didn't think of wanting something new anyway.
Oct
16
comment Error with comments inside and expression
@Mr.Wizard: V.7.0.0 on a macbook, OS X 10.9.3, and I have to play a little till it pops up.
Oct
16
accepted Error with comments inside and expression
Oct
16
asked Error with comments inside and expression
Sep
24
awarded  Autobiographer
Jul
2
awarded  Curious
Jan
20
awarded  Popular Question
Jan
17
awarded  Yearling
Jun
6
asked Scripting a visual comparison between the derivative and some finite scheme
Apr
17
comment Solve Differential equation system
@JensJensen: I don't know what you're saying. You read off the matrix $A$ from the differential equation. You exponentiate it. You multiply the resulting matrix $\text{e}^{A t}$ with the initial vector. Now matter what the matrix or the differential equations are, this works. If the vector is $\vec 0$, then the vector will stay this $\vec 0$ no matter what the matrix is. If the matrix is four $0'$s, then $\text{e}^{A t}=E$, where $E$ is the unit matrix. No evolution as the differential equation given via $A$ is trivial. For any "What if" question like that, you can also just ask the code here.
Apr
17
comment Solve Differential equation system
@JensJensen: "You can't multiply Matrix A with to vectors of 0." I'm not sure what you're saying, but if you say you can't use it for initial values $(0,0)$, then you're not right. Of course you can: $\text{e}^{At}\vec 0=\vec 0$. And this is exactly the solution of the differential equation: E.g $\dot x_1(0)=x_1(0)-x_2(0)=0$, then it says that the value starts at $x_1(0)=0$ and doesn't change.
Apr
13
revised Solve Differential equation system
added 253 characters in body
Apr
13
answered Solve Differential equation system
Feb
6
comment Highlighting bracketing in Mathematica
@jVincent: The information is chemical data (the version of the code in that question is not up to date). I e.g. print it in some sort of TeX-Form. Don't know how to reduce the boxes to a more pleasurable form atm.
Feb
6
comment Highlighting bracketing in Mathematica
@Szabolcs: Interesting reference, although I was not thinking of a function like TraditionalForm, but I want to have the input data displayed differently when I type it in. I'll never evaluate the data as such, I convert the "information" to something differen, see next post.
Feb
6
revised Highlighting bracketing in Mathematica
added 115 characters in body
Feb
6
asked Highlighting bracketing in Mathematica
Jan
17
awarded  Yearling
Dec
23
awarded  Nice Answer