In the following worksheet I want the plot, but Maple can't generate it . I tried two ways-the first one took almost 40 minutes and gave an empty plot, the second one took almost 10 minutes and generate an incomplete plot.Also the integration is very slow,but still,it can do it.

So,can anybody help me with a better way to do things-using other numerical schemes/advanced plotting options-whatever it takes?    Or at least explain what is going on?

By...

i use maple 12

with(PDETools):

U := diff_table(u(x,y)):

declare(U)

error, (in PDEtools:-declare) cannot declare objects as U

I have found out that you can change the attributes of a style via Format/Sty;es, clicking the style in the list and then clicking the Modify button. This only seems to last for the lifetime of the current worksheet.

Was wondering if there was a way of making the change stick, i.e. so you can close down Maple, open it up again and still having the style change applied ?

I'm using maple 13.

The expression that I paste below is quite large and subsequent expressions are also swelling. This is causing maple to slow down and in some instances I get a message saying the kernel has disconnected (maple just times out) I want a way to programmatically reduce the size of the output. I have tried simplify(expr,size) and this has helped some. I don't want to use simplify(expr,symbolic) because of the presence of the square roots. Is there...

I am sorry for bothering you all with the asymptotic again and again. Actually I am unable to find a magic way to evaluate an asymptotic expension.  

R3Infintyplots_S0=.mws

i have a sample but i dont understand what does makes, please help me ...

best regards

MaxVar(1,1)=evalf((1+RanNum(1,1)()/100))

my question is about the parentheses after the matrix RanNum(1,1), why is here ¿? what does makes ¿?

Dear Maple users

Many problems in mathematicis can be traced back to solving equations. It is at the heart of a program like Maple. I know solving equations in general can be immensely difficult. As an example The Riemann hypothesis has to do with the solution of a specific equation, the Riemann zeta function, and is probably the most famous unsolved problem today. I just mention this one to emphasize how hard it can be to solve an equation. Therefore I know...

Hi all,

 I am trying to solve a system of equations- ode's and nonliear algebraic equations numerically. The maple dsolve actually solves this type of system but the problem is it is taking lot of time to solve. I think it is not solving the algebraic equation numerically.

i am using dsolve as: dsolve({eqs,ic},type=numeric,output=listprocedure). 

Is there any other way to specify maple dsolve to solve all equations including algebraic numerically?  

I was going to demonstrate the action of Maple for a symmetric 3 by 3 real matrix with 1, 2, and 3 distinct eigenvalues and got strange results.  It may be that I need to explicitly tell Maple that the matrix is symmetric and real. (How would I do this?)

For example, after   with(LinearAlgebra)    I put   tmat1:=Matrix(3,3,[1,2,3,2,4,5,3,5,6]), and get eigenvalues with small imaginary parts (!).   When I put   tmat2:=Matrix(3,3,[0,1,1,1,0,1,1,1,0...

The complexplot3d command can color by using (complex) argument for the hue, and compute height z by magnitude. So, when rotated to view the x-y plane straight on, it can provide a nice coloring of the argument of whatever complex-valued expression is being plotted.

Another way to obtain a similar plot is to use densityplot (with appropriate values for its scaletorange option) and apply argument to the expression or function being plotted. For some kinds of complex-valued...

Hi,

Was wondering why I am getting such a variety of outputs when I input what is essentially the same expression each time ?

See attached screenshot.

thanks,
Andrew

There have been many times when I want to see what the graph a function looks like, but don't have numbers to put in there. Sure, I could just plug in numbers, but that often affects the graph - such as slope. Is there any way for Maple to show me the shape of a graph with a symbolic function?

Hi,

How to compress the following equation to make it more easly readable.

A:=-1/2*Phi*(variphi*sigma*sinh(l*S0)*cosh(l)-variphi*sigma*sinh(l*S0)*sinh(l)-variphi*sigma*sinh(l*S0)*R1*cosh(l)+variphi*sigma*sinh(l*S0)*R1*sinh(l)+cosh(l*S0)*l*N_1*cosh(l)-cosh(l*S0)*l*N_1*sinh(l))/l/(-R1*R2*cosh(-l+l*S0)*sinh(l*S0)+sinh(-l+l*S0)*cosh(l*S0));

Thanks

If I have an ODE say dg/dx = g I can't seem to get a solution I can work with directly. Of course with dsolve I can get an expression which I can cut and paste into a function definition: ie.

ode:=diff(g(x),x) - g = 0

dsolve(ode)

g:=x->"output from dsolve"

But how do I get g(x) without the cut and paste. I have tried a number of ideas (rhs, subs) but I cannot get a function I can use  for example to calculate g(0) or g(1)

The June edition of the IBM Ponder This website poses the following puzzle:

Assume that cars have a length of two units and that they are parked along the circumference of a circle whose length is 100 units, which is marked as 100 segments, each one exactly one unit long.

A car can park on any two adjacent free segments (i.e., it does not need any extra maneuvering space).