I have a nonlinear partial diff eq which I am sure has been categorized.  How do I go about finding literature on the eq & the approach to solve it.  I have visited various websites that have catalogs of nonlinear partial diff eq's.  The problem is notation is so NONSTANDARD I have no IDEA what I am reading.  I have included a PDF eq_of_choice.pdf with my notation which I am familiar with. ...

I'd like to add the summation with just the index below, not the i=1..n form, but Help seems to say that I can only expressions and entities from other palettes...

In an erlier post, I referred to the foot date format, and that post didn't trigger a reply, so I imagine that there is no satisfactory answer..

Help states, for FormatTime, "The default format is the ISO 8601 standard default date format..." but the date in the footer is of the style "12/1/10" which has obvious faults. Is there a way to get a decent date format in the footer other than putting it in by hand?

Here is my code where I get the problem of taking the coeff of theta dot . The output of matlab Cm shows the coeff in the output matlab ( Cmatrix , optimize) at t2727 I see coeff .Meaning when the loop ran coeff didn't execute.

> J[p1] := Matrix(3, 4, {(1, 1) = -sin(theta[1](t))*`Δx`[1]-cos(theta[1](t))*`Δz`[1], (1, 2) = 0, (1, 3) = 0, (1, 4) = 0, (2, 1) = cos(theta[1](t))*`Δx`[1]-sin(theta[1...

Visualizing_the_SVD_.mw

Hola ev1:

I like to shorten the size of the command, through setoptions3d function. But it seems that it does not interact with ApplyLinearTransformPlot function.
How to get to label the vectors?

Gracias

I am using CodeGeneration[Fortran] to generate a Fortran subroutine.  The subroutine simply takes a vector state as input and generates a large matrix as output.  However, upon calling "Fortran" I have been getting the following warning that I have not been able to figure out:

"Warning, character limit for Fortran77 statements exceeded; please filter input through codegen[split] first."

If anyone can provide some tips, I would appreciate it.

I try to get the answer of int by newton cotes method,

but after runnig,it gives a complex number for the answer.

I think its because of singular point.

Is there any method which find singulaitis and make integarl to some parts without that singular point automatically?

thanks

I have 2 queestions:

1- concerned about the title font format:

fot the title

tit:=sprintf("W=%g,D=%g,f=%g,M=%g,N=%g,q=%a",Omega,Delta,phi,M,N,q);
                        "W=0.2,D=0,f=0,M=0,N=0,q=-10"

the little problem in the last value q=-10 it appear theta=10 even the sign (-) invisible

2- the sign(-) at the tickmars...

Error_redirect_pa.mw  i got the problem to get repeated value of unknown parameter ''ALPHA"" using pade approximation in maple. i uploted my worksheet kind watch out my problem. and give some suggessions...Error_redirect_pa.mw 

hello ,

I have figured out how to solve for corresponding values but when i try to solve the set of equations by using for example,

a :=[10 values]

b:=[10 values]

w:= [10 values]

##here i want to solve the set of equations for  [a1 b1 w1] ,[a2 b2 w1] , [a3 b3 w1]....like i want to solve the equations for all correponding values of a,b @ each w ##

set of equations (function of a,b,c)

i cant make it work...

I want to mix nicely formatted text and code, with the ability to hide the code and variable scoping

Something like

Some blah blah
{ First part of code snippet with scope 1
More blah blah
Second part of code snippet with scope 1}
Yet more blah blah
{ Second code snippet with scope 2 }

In Mathematica I would use the "Module" keyword, but there does not seem to be an equivalent in Maple, and I am not sufficiently...

I want one of a sequence of questions to not show it answer. The other questions need to show their answers, but this one

cannot. I could make a separate assignment for this question but that seems rather painful. I use latex => .qu so the

solutions that don't require touching the editor is a plus.

Hi;
I need your help:

1- How to improve the implementation of the functions or procedures.? As displayed, is the result of the Matlab function "FromMFile"

2- how to plot the  standard basis vectors in which the cylinder is initially represented.

Having a few problems in working out system transfer functions using the SystemConnect command.

1. I think that there are errors in the description of the function within the HELP file. In the Description there are five bullet points. It is the third bullet point I think has an error. yi maps the global inputs to the global outputs, OK - however the text describes this as 'the number of rows in the yi matrix is determined...

I was successful @ splitting the coupled eq into the 3 constituent PDE's but have been unsuccessful to get MAPLE to generate the characteristic solutions except for the 1st one for X which is the basic solution to the Helmholtz eq.

Can someone with more savy with MAPLE verify whar I have so far & advise me how to proceed to solve for Y & Z?  I have uploaded my file.  My expereince with MAPLE vector calc package is limited.

appreciate the assistance