Can anybody here tell me why the close votes are not notified in the "review"? I only have the ugly brown number when there is a suggested edit, no close vote..

I'm all new to the closing system so maybe I'm not meant to be notified in the upper bar.

@Öskå welcome to the club! I cannot tell you why, but that seems to be the default. Would be interested in the rationale, too.

Well.., it would make sense to be notified of the close votes.. It should say how many tasks need to be done

Suggested edits are not the most important IMO

fyi, finite elements documentation are now up for V 10, may be this means V10 is getting close. reference.wolfram.com/language/FEMDocumentation/guide/…

@Nasser Hell, its gonna be fun :D

@Nasser I use "Summary of New Features in 10" as test. When it works, I believe that it will be close to lunch. You can find it in the end of Association reference

Can someone please do Distribute@Cos[a+b]? Am I going nuts or something?

Alright, I guess it's mean to be like that, sorry :D

@Öskå

Yes.., but apparently Distribute does not think at all when doing such operations, and is not meant to. Which shocked me

@Öskå Distribute does not know what the function is. It is just doing patterns thingies. Not algebra nor trigonometry.

@Nasser Yes that's what I figured, when I wanted to delete the message it was too late.. :)

@Murta That page actually was there when they published preliminary documentation, but was hidden quite swiftly after I mentioned it here on the chat...

My goal is to pass strings from notebook to external language interpreters, much like WReach did in mathematica.stackexchange.com/a/18572/18591 Using temporary files is efficient but ugly, and no scope is preserved in the external interpreter.

Piping is just more natural. After all, that's what streams are for, right? To accesss various processes in OS?

All right, to be more precise: I have initial data in a cell (assume it's always a string). External process understands this kind of data (and has a scope, so it is present in memory all the time). I send data to it by evaluating cell, and the output gets written right below the initial data, so everything is kept in a nice organised logged form. What is the general guideline to do that in Windows? We assume users start and kill external processes themselves.

I've heard numerous times it's easier to achieve in GNU/Linux but it probably is not impossible with Win, is it?

Maybe it deserves to be a proper question in the primary Q&A zone. I don't want to ask about Windows but if I pose a general question there will probably be different valid answers depending on OSes, and not a single answer containing, say, OS X, GNU, Win solutions, effectively making it impossible to pick the correct answer.

@Akater you can ask for an OS-specific solution (at least I can see no reason why not).

If I have CopyTensor in my code, does it mean it holds memory till I close MMA and garbage collection does not kick in? The physical memory keeps increasing continuously as I run my program.

@Öskå @YvesKlett I don't know if it's dependent on rep (probably is), but I see the brown indicator for everything! It's annoying, because all these years it used to be only for the suggested edits.

@rm-rf perhaps we below 10k get the rookie treatment. I guess in your case it is more or less useless because it never disappears...

@YvesKlett If I have CopyTensor in my code, does it mean it holds memory till I close MMA and garbage collection does not kick in? The physical memory keeps increasing continuously as I run my program.

@brama sorry, no clue.

Is this the way to do Memoization, use Hold[g=f...? NMinimize[{Hold[g = f[x1, x2, x3]], 3 <= x1 <= 12 && 3 <= x2 <= 12 && 3 <= x3 <= 12 && Element[x1 | x2 | x3, Integers]}, {x1, x2, x3}, Method -> {"SimulatedAnnealing"}]

@brama No. reference.wolfram.com/mathematica/tutorial/…

Keep the answer for yourself. Don't spoil other people's shame.

lol, yeah. definitely didn't get it in 20 seconds.

@MichaelHale "Elementary school admission test" ... it took me a few minutes

@belisarius 5 seconds :D

@rm-rf good. You've been admitted :)

@belisarius I passed the logic test, but failed Cantonese :(

@rm-rf In big bold letters above it says "The answer is not 42"

I got it in 6.3 seconds. All I had to do is turn my monitor upside down.

Anyone willing to take a crack at this? mathematica.stackexchange.com/questions/50672/…

Here is another one for third grade student in primary school

What is the area of the shadowed region?

@xslittlegrass 8?

@belisarius 9

@rm-rf I took the image and ran a Monte Carlo integration

That's what any kid would do

@xslittlegrass How old are the kids in third grade primary in the land where this is coming from?

@rm-rf I'm tempted to log into my facebook account and post this because I'm sure most grown ups couldn't answer it in Germany.

The answer is 5.5

@halirutan around 10

@xslittlegrass The answer is what?

5.5

@xslittlegrass So we have 3 answers now in a Mathematica chat?

So I remember the 2cm^2 triangle and the empty triangle are similar. Not sure where to go from there.

the ratio between the corssed line are 2:3

so that the empty triangle has a area of 3*(3/2)=4.5

@xslittlegrass OK, the line from the lower-right corner goes to the middle of the top horizontal line, right?

@halirutan no, it doesn't assume that in the question

@xslittlegrass If you don't have the official solution, then I'm pretty sure you should assume that, because it makes the question fun to answer without calculation!

(@xslittlegrass And if you try a ruler on your screen, then you have to admit the designer took great care to hit the middle)

@halirutan No, you don't need to assume that to get a answer without calculation.

So the total area for the shaded one and the 2cm^2 is 3+4.5=7.5, and thus the shaed area is 5.5

@xslittlegrass 3/2*3 + 3 - 2

@halirutan I agree it's kind of misleading about the middle point, since it's a hand draw picture.

It would be too easy for primary school students if they had a picture to look at that was not misleading :)

@Szabolcs you are fast !

I get everything except the first sentence. They have the same height?

They share one side. The area is a*b/2, so if one is the same, that means the ratio between the areas are the ratio of that other variable.

Ah

But we don't know they are right triangles

At pool so slower than usual

Oh, got it

I was confusing the height with the line in the diagram

The answer is Uncompress["1:eJxTTMoPypRmYGAAAAuwAck="]

@xslittlegrass But you are assuming that it is a rectangle, right? How come when it is not stated in the drawing?

@xslittlegrass Seriously, no 3rd grad pupil will solve this in Germany. They may guess, but they clearly are not able to deduce the solution and understand it.

@xslittlegrass I checked. The formula for the area of a triangle is introduced in grade 6. Now they need to understand that since the height is the same, the ratio of the areas comes down to the ratios of the sides... no way, they do it in 3rd grade here.

@xslittlegrass Now, let's assume for a very brief moment that short diagonal line goes indeed into the middle, the solution comes down to a simple drawing exercise:

@xslittlegrass I'm still not convinced that 3rd graders will do this at a picnic, but it is far more likely.

@halirutan Hehe that's what I did

as a third grader

@belisarius I've been helping kids for too long to even have considered a more complicated way from the beginning :-)

@halirutan yes I agree, but a lot of kids don't have childhood in China

@xslittlegrass Yep, I've heard that it seems to be really funny there if you are a kid.

@xslittlegrass Are you Chinese?

(Or can you at least read it?)