Hi! I have a problem with the total PDE linear system:

F=F(x,y,z,w,h);

X1(F)=F[x]+F[y]+F[z]+F[w]=0;

X2(F)=x*F[x]+y*F[y]+z*F[z]+w*F[w] - h*F[h]=0;

X3(F)=x^2*F[x]+y^2*F[y]+z^2*F[z]+w^2*F[w] - ((z-x)*h+C*(w-y)/(z-x))F[h]=0;  (C=const)

The Poisson brackets are:

[X1,X2]=X1, [X1,X3]=2*X2, [X2,X3]=X3.

I'v tried to solve this system with pdsolve, but F=const is the only Maple's answer. But I am sure that this system has a...

I love using the inequal function to plot the feasible region for a 2-d linear programming problem.  Is there a function that does the same thing in 3-d?

Thank you.

I was using the Matlab toolbox in Maple 13 and everything was great until I upgraded Matlab from version 2008b to 2010b. Is it that the new vesrion is not supported? Or can I work around that?

Thank you.

Fernando

So I have an image given by plot[some function] and I need a table with 2 columns - x and f(x)...

In a previous question I answered I had attempted to turn what I did into a proc.  It works fine by itself but when it's in a proc it won't display both plots.  Not sure if it's because there's too many levels of calling or if it's a bug. 

plotoversurface:=proc(p1,s1)
  local a,b,to3d,c:
  a:=plot3d([s1],x=-10..10,y=0..100,style=patchnogrid):
  b:=plot(p1):
  to3d:=plottools:-transform((x,y)->[x,y,s1]):
  c:=to3d(b):

Dear friends,

    The Physics package in Maple is a good tool for quantum physics. However, I came across some problems with the package when I performed a computation. Please see the figure.

The left-hand code (last two lines) shows Amx.Amy.Ket(x,1,1)=”-Ket(x,0,0)”. However, I believe that the answer is wrong; it seems that the negative sign should not be here.

The “am.Ket(B,4)=2ket(B,3)”

Hi,

I would like to compare different decision methods. All these methods can be described in general with the  following function:

f:= (X::Matrix,C::Vector)-> TerminalScores::Vector

In my comparison I fix C, and X to constant numeric values. The exception is  X[1,1] :=t parameter. Hence with the unapply(f(X,C),t) I can generate a single-parameter function for each method.

Fist, I would like to diffrentiate the methods (f1, f2, f3...

I'm going to put this plot into LaTeX, so it'd be nice if the font is similar. Both equations are functions of one variable.

Is there a nice, concise command to do this? Additionally, what's the easiest way to export this graph into a format useable by pdfLaTeX?

Thanks so much!

I'm running Maple 14, if that matters.

Hi everybody:

I was wondering if there's a tool in maple that would allow you to plot a function f(x,y) over a geometric shape (e,g,, a triangle). Sort of like the Matlab logo if you know what I mean. Or even simpler: for x=0,y=0..10, sin(y), and y=10,x=0..10, sin(x)

thanks a lot

dimitrios

Maples own spiralgraph or kalidascope.

It's kind of annoying sometimes when you create a plot and you haven't got enough points to see a nice smooth curve.  It's an easy fix, of course. Just add numpoints=x where x is any number you want.

However, that being neglected this simple little animation reminded me of the spiralgraph craze in the early 80's, or could even be a kalidascope if the colors changed.

with(plots):
animate(spacecurve,[[sin(x*t),x,cos(x*t)...

It's been a while since I wrote one of these random posts, but I still have a couple more I wanted to write.  In this post, I want to describe one of the tests used in the paper that initially inspired this series of posts: the Wald-Wolfowitz runs test.  This test is interesting in that it does not test for uniformity

Forgive me for not using the "Maple Math" and "Maple Plot" commands.  I tried, but it says everything that I enter is an invalid expression so I'm just entering it as text...

I define two functions, they plot as expected:

f(x) := sin(x);

g(x) := 2*x;

plot( f(x) );

plot( g(x) );

Now I want to plot the composition:

plot( f(g(x)) ); 

Doesn't work!

Preliminaries:

• Not processing matrics, vectors, or equations (as members).
• Decided sequence Data Structure for an element addressable DS, is most liking to my needs.

Task at Hand:

• Processing integers consecutive from 1 to 10,000 (later upto one million) for multiple properties.
• Presumed marking of a memeber to indicate T/F.
• (later) Although, in time, to perhaps? place a sequence inside that member, for additional degrees of marking, or "bigger data" too.
• Example: bag_list[ 3] := 1; BL[5] 1, 7 1, 11 1, 13 1, 17 19 23 ...
• ie, Marking the primes.

Dear All,

I am not an expert in Mapple, also my calculus courses were quite long ago. I would like to compare different decision methods. The simpler ones worked with the code below (even if it was slow). but I have problems with the differentiation and the integration of two complex methods (i.e., dia and topsis).

All these methods can be described in general with the  following function:

f:= (X::Matrix,C::Vector)-> TerminalScores::Vector

Hi There,

I'm having a problem trying to solve the folllowing system of PDEs.

PDE1:=diff(P[e](x, t), t) = 5e(-5)*diff(P[e](x, t), x, x));

PDE2:= diff(P[s](x, t), t) = 5e(-10)*(diff(P[s](x, t), x, x));

IBC:={5e-5*(D[1](P[e]))(0.2e-3, t) = 5*10^(-10)*(D[1](P[s]))(0.2e-3, t), P[e](0, t) = 1, P[e](x, 0) = 0.1e-1, P[s](0.215e-3, t) = 0};

Sol:= pdsolve({PDE1,PDE2},IBC,[P[e](x,t),P[s](x,t),numeric);

Error, (in pdsolve/numeric...