00:36 -!- HaraldG(n=harald@217.19.46.22) has joined #maxima 00:44 Seems anybody, who had questions this evening is gone by now. :( 00:45 Not sure if I could give helpful ansers anyway ... 00:48 wee 00:49 you look at least a bit as if you could know about the units module 00:49 *poker HaraldG* 00:51 Best ask the question, then we'll find out ... 00:51 Generally, it's a good idea to ask questions anyway, as this channel is logged. 00:51 aah thanks 00:52 basically, i'm getting sqrt(2)*(s^(3/2)*sqrt(W))/(sqrt(kg)*m) instead of just sqrt(2) 00:53 which is at least a bit disturbing - but i've got no idea how to simplify that expression 00:53 (yes, i'm quite sure that that one is dimensionless, although gnu units can't help me either) 00:53 i did load("unit") 00:58 I don't have access to a current maxima right now, but think you have to type long unit names liker "meter", "watt", etc. 00:58 Not sure though, best look at the source of the units package. It shouldn't be hard to read. 00:59 hmmno that's not the problem... W becomes (kg*m^2)/s^3 01:02 Hmm, perhaps it's the roots ... Did you try radcan() ? 01:02 wait 01:02 same as before - i think that's strange 01:05 Yes, strange. Here I get (maxima 5.9.1 though): sqrt(2)*abs(meter)/meter. 01:06 I guess, we should declare units to be positive, but other than that it seems to work. 01:06 Can't test an other version of maxima right now. 01:06 this is 5.10.0 - what does sqrt(W) give you? 01:07 sqrt(watt) gives me ABS(METER)*SQRT(KILOGRAM/SECOND^3) 01:08 it just gives me sqrt(W) back 01:08 now, it gets interesting: if i do W; sqrt(%); it gives the "right thing" 01:08 i guess your using another units package? 01:09 I'm using the units package, that came with maxima 5.9.1, don't now of any other. 01:10 what does it give you on load? something like "Units version 0.50"? 01:10 No, it only displays "/usr/share/maxima/5.9.1/share/physics/units.mac" 01:12 ah, i used /usr/share/maxima/5.10.0/share/contrib/unit/unit 01:12 .mac 01:15 units works really well, thanks 01:15 radcan does well 01:15 although unit.mac looks so much more complicated 01:16 HaraldG, how can i force the units to be positive? like meter:abs(meter)? i don't know maxima too well yet 01:18 assume(meter>0); I think, this should be added to units. 01:19 Perhaps you want to write a bugreport or even patch? 01:19 uh sounds like a good idea 01:33 http://sourceforge.net/tracker/index.php?func=detail&atid=304933&aid=1622650&group_id=4933 there you go 01:44 Thanks 01:44 you're welcome 01:46 -!- Prax01D(n=Prax01D@149.99.86.137) has joined #maxima 07:42 -!- Prax01D(n=Prax01D@tor58-7-83-38.dynamic.rogerstelecom.net) has joined #maxima 13:47 -!- Prax01D(n=Prax01D@tor58-7-82-69.dynamic.rogerstelecom.net) has joined #maxima