Wow!  Okay sorry for the errors, thanks for clearing that up. 

I understand why Maple picks the value at (1,0) to be 1.  Okay I see now, it just doesn't work for the temperature distribution function x that I chose.  A contradiction arises as I approach x=1.  I should have chose something like u(x,0)=x*(1-x) for the temperature distribution instead. 

So what's going on with the spam?  It seems to have exploded. 

Is it possible that it is piggy backing another users logon?

The other possibility is that once the bot has finished posting to all the posts, maybe the spamming will be over as it also doesn't appear to repost to a thread it has already posted to but it's latching onto older and older posts. 

However it would be nice if the posts would be ordered to the last undeleted action.  This way, old postings with deleted new spam posts won't stay out in front.  Of course we'd loose our opportunity to see old posts but at least we would restore some order to mapleprimes.

@Samir Khan Thank you Samir for your expanded version.  I'll have to take a bit of time to follow your calculations through.  I really appreciate this. 

@Samir Khan Thank you Samir for your expanded version.  I'll have to take a bit of time to follow your calculations through.  I really appreciate this. 

@Alejandro Jakubi , yes thanks for the reminder :)  As for spamming particular posts ... I'm sure you meant no harm by it. 

I believe it was noted by a couple of people about re-reading older posts.  In a way it is good but annoying at the same time.  With a little more forum developement Maple could have a nicely laid out and well working forum.

Although it is interesting to re-read these older posts but maybe it's even necessary for this forum to have older posts brought to the front as it appears many of us no longer dig back into the forum.  There are many unanswered questions, discontinued posts and projects that I'm sure many of us would have enjoyed to see developed further. 

And disjointed answers (bubbling up as it were called) is not working well.  I agree that higher voted answers listed high up is not a good idea.  Let's argue the case.  It's quite easy to find the top rated answer (just look for the most votes) than it is to try to figure out what order the answers were supposed to go in.  In mathematics, if there is one thing to loathe, it is like trying to understand a problem with all of the steps out of order.  Funnily enough mapleprimes appears to defy the logic of mathematics (this is a math forum, no?  Perhaps it's a game? - although game theory is interesting ... but I digress).  In math, order matters ... Mapleprimes ... forum for Maple ... math software ... I think one can see the conclusions I am trying to convey.  One might also argue that in mathematics there is no need for conversation ... well I can't argue that, but if you can say bye before saying hello you might as well be able to add before you multiply.

@alec yes looks like I misspelled it.

Oddly though my procedure only works from the extended interface to the standard.  And not when I modify it with if statements to include the other way around.  When I am in the standard interface I can't seem to force maple to output y' from inside the proc. 

@alec yes looks like I misspelled it.

Oddly though my procedure only works from the extended interface to the standard.  And not when I modify it with if statements to include the other way around.  When I am in the standard interface I can't seem to force maple to output y' from inside the proc. 

In trying to detemine (code) if typsetting is standard "is" won't work because typsetting is an invalid property name

is(interface(typesetting)=standard)
      Error, (in interface) unknown interface variable, typsetting

How do I check if interface(typesetting) is standard or extended to use in a loop?

In trying to detemine (code) if typsetting is standard "is" won't work because typsetting is an invalid property name

is(interface(typesetting)=standard)
      Error, (in interface) unknown interface variable, typsetting

How do I check if interface(typesetting) is standard or extended to use in a loop?

@Alec Mihailovs thanks.  Pardon my mistake in the misuse of the word.  I have re-edited it.

I thought I would write a little procedure to speed things up a little, but how can one determine what typsetting level maple is in using code?  I wanted the changediff procedure to use the extended output if I was standard mode and standard output if it was extended mode.

changediff:=proc(a)
  interface(typesetting=standard):
  print(a);
  interface(typesetting=extended):
  ``
end proc:

a:=y'+y''-45x=3:

changediff(a);
      d                d^2
     ---  y(x) +   -----  y(x) - 45 x =3
      dx              dx^2

I thought I would write a little procedure to speed things up a little, but how can one determine what typsetting level maple is in using code?  I wanted the changediff procedure to use the extended output if I was standard mode and standard output if it was extended mode.

changediff:=proc(a)
  interface(typesetting=standard):
  print(a);
  interface(typesetting=extended):
  ``
end proc:

a:=y'+y''-45x=3:

changediff(a);
      d                d^2
     ---  y(x) +   -----  y(x) - 45 x =3
      dx              dx^2

@longrob

So how is your new laptop after a year of using it?  I'm on the hunt for a new one.  Lots of HP's at the top in consumer reports but not sure why Toshiba is so far back in the 15"+ screen sizes?

Do you have Maple 15?  The paralell programming features I'm sure peaked your interest. 

I thought we could utilize CUDA programming with older Maple versions.  Maple can call external code right?  Then we could just code libraries in CUDA (C/C++) and use them with Maple, but probably Maple 15 would make that easier, no?

I agree this forum is rapidly deteriorating.  In my opinion mostly because of the recent ongoing spam.  And even more so with almost no news feedbacks from site administrators (hence my post about a news section).  I hope the administrators of this site can address these situations fairly soon.  I almost wonder .. have the site admins gone on vacation? 

I have tolerated the new sites layout and I remain optomistic about future changes... for now, but the ongoing spam makes it that much harder to tolerate.