There are 11 questions tagged expressions including one that is tagged only with that tag.
I wonder if this is too general a tag to be useful. What do others think?
And how should we tag this question otherwise?
@Verbeia And, tomorrow we'll hit 1000 questions. Not bad at all for 73 days in beta.
To reiterate: no other site our age has anywhere near our stats, period. Sorting by newest on StackExchange makes this abundantly clear. (Although, Computer Science may be giving us a run for our money.)
It takes until Travel to start to exceed our stats, and they've been in beta for 283 days! We just lack users, and those numbers are going up constantly. I think we're in phenomenal shape.
Lastly, Skeptics just graduated with a little over a year under their belt. They trounce us on visits per day (4.2k v. 1k) and users (5.8k v. 883), but their question and answer count isn't out of our reach in another two months. I think we'll hit it before then.
I don't see that we yet have the user base to be considered for graduation at 90 days. But, I wouldn't be surprised if it isn't much beyond that.
I mean, I suggested a change in your f1 that might cause doubt as to how it works. The change I suggested in your f2 was just adding a block for speedup. And I am still thinking why it speeds it up soo much
I can summarize the conclusions I was led to by my personal experience, with a disclaimer that what follows may not be the entirely right explanation. The anwer seems to lie in the differences between Mathematica call stack and traditional call stacks, which originates from Mathematica pattern-de...
I think I'm barking up the wrong tree with that tail call optimization thing. I think this is a simpler situation. The function is essentially Blocked throughout the first tree direction, so evaluation (with Block) operates in reverse. Am I making sense so far or talking gibberish?
@Rojo sorry, I was looking at the code. I started to reason through it but like I said, I just cannot think right now. Do ask Leonid if you see him, will you?
@F'x It took me 10 minutes to figure out how get a black background in the first row and column and alternating grey/white rows in the rest of the table.
but I'm always amazed that many of the young students who have a engineering degree (or sometimes a PhD) still don't manage to care about that kind of stuff
@SjoerdCdeVries by the way, I know I flag a lot of comments as "obsolete" because I think the hardest thing for a moderator is to keep these clean (and users often don't delete their obsolete comments)
@F'x I feel they are helpful. It might be that once in a while I handle them inappropriately when I'm working on my iPad. There are two flag screens, and both have a delete and dismiss link, but in one this refers to the question and in the other to the flag and on the iPad I don't get a tooltip and it's easy to make a mistake there.
There are quite a few new questions tagged Mathematica on StackOverflow. I see us as potentially missing out on some new users.
How should we decide which questions should be flagged to be migrated?
This question is separate from this question, which was mainly about old questions.
brilliant: I have a problem with NDSolve, probably trivial and caused by me staring at the same code for the whole day. I decided to simplify the example down so as to ask here. The slightest, most trivial modification to the code fixes the problem...
Of course, I really do need to solve the unmodified problem, which I can't. excellent
I have two nested solid figure, where $V(a,h,\tau)$ defines the volume and $A(a,h,t)$ defines the surface. The outer solid figure is parametrized in $a_s$,$h_s$ and $t_s$ (they share a common center). Now I raise the Volume of the inner by factor $\alpha$, so
$$V(a_s,h_s,t_s) = \alpha V(a,h,t)$...
Sorry I was too fast -the fact that it got three answers that were deleted either by the owner or the moderator suggests RM wanted to make sure it didn't attract any drive by answers.
I have two nested solid figure, where $V(a,h,\tau)$ defines the volume and $A(a,h,t)$ defines the surface. The outer solid figure is parametrized in $a_s$,$h_s$ and $t_s$ (they share a common center). Now I raise the Volume of the inner by factor $\alpha$, so
$$V(a_s,h_s,t_s) = \alpha V(a,h,t)$...
