00:20 -!- scortch(n=scrh@pool-71-161-100-177.cncdnh.east.verizon.net) has joined #maxima 00:21 maxima will not integrate "random_continuous_uniform" 00:23 or "cdf_continuous_uniform(x,0,1)" or "pdf_continuous_uniform(x,0,1) 02:39 -!- faroe(n=faroe@port487.ds1-od.adsl.cybercity.dk) has joined #maxima 02:42 -!- Prax01D(n=Prax01D@tor58-7-82-213.dynamic.rogerstelecom.net) has joined #maxima 03:15 -!- tomasko(n=tomasko@adsl-68-126-204-109.dsl.pltn13.pacbell.net) has joined #maxima 03:15 how do i print %pi's approximation? 03:24 hmm, well for the time being N[] in mathematica worked 03:24 i'd still like to know how i'd be able to do it in maxima though 06:16 tomasko: %pi,float; 06:19 tomasko: float(%pi); rather 06:19 or %pi,numer; 06:36 -!- stw__(n=stw@e176165074.adsl.alicedsl.de) has joined #maxima 07:20 SerajewelKS: wonderful, thanks 07:35 -!- MakeGho(i=make@cs87254.pp.htv.fi) has joined #maxima 07:35 Am I doing something wrong when matrix([2,-2], [-2,-6])*invert(matrix([2,-2], [-2,-6])) equals matrix([3/4,1/4],[1/4,3/4]) in maxima? 08:25 -!- cunzhang(n=apzc2529@218.7.43.195) has joined #maxima 08:38 -!- Prax01D(n=Prax01D@149.99.96.29) has joined #maxima 09:18 -!- tomasko(n=tomasko@adsl-68-126-204-109.dsl.pltn13.pacbell.net) has left #maxima 09:58 -!- gabkdlly(n=gabriel@dslb-088-073-029-217.pools.arcor-ip.net) has joined #maxima 11:17 -!- cunzhang(n=apzc2529@218.7.43.195) has joined #maxima 11:53 -!- lusepuster(n=thoeger@0307ds4-vbr.0.fullrate.dk) has joined #maxima 11:54 Hello ppl; I hope somebody can help me with some syntax I've tried to look up on the web but cannot seem to find... 11:55 ...I have a function f(x), and need to find a function M(x)= \int_0^x f(x') dx'... How would I make Maxima do that? 11:55 Hope anyone can help me 11:57 f(x):=x^2; 11:57 integrate(f(x),x,0,x); 11:58 lusepuster: just say your problem. if anyone know the answer,he/she will tell you :) 11:58 cunzhang, I just did... 11:59 ...i just split it in two sentences 11:59 lusepuster: I mean you needn't say 'Hello ppl; I hope somebody can help me with some syntax I've tried to look up on the web but cannot seem to find...' 12:00 lusepuster: can these command solve your problem? 12:00 cunzhang, Yeah well that is right 12:01 :-) 12:02 cunzhang, which commands? 12:02 ah, sorry, I saw them now 12:03 cunzhang f(x):=x^2; 12:03 cunzhang integrate(f(x),x,0,x); 12:20 -!- cunzhang(n=apzc2529@218.7.43.195) has left #maxima 13:06 -!- eggauah(n=daniel@20845108.cps.virtua.com.br) has joined #maxima 13:08 -!- cunzhang(n=apzc2529@218.7.43.195) has joined #maxima 13:09 lusepuster: do these commands work? 13:09 cunzhang, yes, thanks! I thought you left the chat, that is why I did not reply 13:10 lusepuster: :) 13:11 cunzhang, seems that my problem was that I did an integral that happened to diverge, it wasn't clear to see since it was a bit complicated 13:11 cunzhang, that is why it didn't work for me in the first place... and why I have to do figure out some other wau 13:11 way* 13:12 :) 14:29 -!- Prax01D(n=Prax01D@149.99.96.214) has joined #maxima 14:29 -!- cunzhang(n=apzc2529@218.7.43.195) has left #maxima 14:54 -!- mogunus_(n=marco@66.251.25.213) has joined #maxima 15:44 -!- lusepuster(n=thoeger@0307ds4-vbr.0.fullrate.dk) has joined #maxima 15:45 Hi again... I need now do a derivative; d(f)/d(log(x))... Obviously maxima doesn't understand that, and my math isn't good enough to see why Maxima doesn't understand it...? 15:47 Maybe I need to specify, the derivative is of the form d f(x) / d log(x), with no direct log(x)-dependence of f 16:10 -!- szymon(n=szymon@cbf223.neoplus.adsl.tpnet.pl) has joined #maxima 16:47 -!- HaraldG(n=rldprog@g4v1.g4.wien.funkfeuer.at) has joined #maxima 16:51 MakeGho: Yes, you did something wrong: Matrixmultiplication (ie. non-commutative multiplication) isn't represented by "*" in maxima but by "." 17:22 -!- lusepuster(n=thoeger@0307ds4-vbr.0.fullrate.dk) has joined #maxima 17:37 Hi, bumping my question from before; is there any 'easy' way to do the derivative d f(x)/d log(x) , with no obvious f dependence on log x? 17:51 I think you will need to do a substitution manually, to get rid of log(). 17:54 HaraldG, ouch, but thanks... I've been looking a bit at changevar, that wouldn't do the trick? Haven't got it to work though... 17:55 The manual substitution is going to pull teeth 17:57 I don't know much about changevar, would need to look into it, but I don't have the time yet. 17:57 What's so bad about manual substitution? What's your real problem? 17:59 (I hope I really understand your problem, never saw the notation d f(x)/d log(x) before.) 18:02 -!- eggauah(n=daniel@20845108.cps.virtua.com.br) has joined #maxima 18:04 I need to go now, but I'll read the logs... 20:17 -!- lusepuster(n=thoeger@0307ds4-vbr.0.fullrate.dk) has joined #maxima 20:18 HaraldG_log: ok, good. But what does * do then for matrices? 20:19 HaraldG_log, hi again... Manual substitution turned out to work after all 20:35 -!- Prax01D(n=Prax01D@tor58-23b-94-74.dynamic.rogerstelecom.net) has joined #maxima 21:17 -!- lisppaste4(n=lisppast@common-lisp.net) has joined #maxima