I've been trying to numerically solve (and then plot) this set of equations, to reproduce results from a scientific paper (Berro et al., BPJ 2007). Maple tells me that some matrix is singular - any idea what I can do differently?

Any help much appreciated.

> eqn1 := 15*(diff(theta(s), `$`(s, 2))) = N3(s)*cos(theta(s))-N1(s)*sin(theta(s));                    ...

I want to fsolve one non-linear equation as follows: expr_1/expr_2=C which can not be solvable in maple directly. However, once I use expr_3=simplify(expr_1/expr_2) and then expr_3=C, it returns a result. Something weird happens now. Once I substitute the result in expr_3, it returns a value the same as C. But if I substitute the result in expr_1 and expr_2 respectively and then do a division, the outcome is dramatically different from C, which makes no sense at all. Is it...

Hello,

I have a large calculation set in Maple 14 that has an assigned value to the variable 'm'. Now I am trying to incorporate units into the calculations using "with(Units[Standard]):". However, an error is thrown whenever i try to use the [[m]] units, since I have assigned it a value already. Is there any way to keep my variable name and still use meters as units?

Hi,

i have a problem to find the minimum point for implictfunction ,

I have a implictfunction that is ( f(x,y,z)=0 ), i want to find the minimum point for x.

I try to solved this problem using optimastion package and lagrangeMulteplied. the poth packages do not solved the problem.

Also if i have a implicitfunction as g(x,y,z,k)=0.

can you help me to solved this problem using maple? 

The numerical solution of PDE with IBC is given as a module: Download PDE1.mw . How to extract u(0.5,t) and u'_t(0.5,t) from this solution? Thanks in advance.

Following the last question: After eliminating the units, the equation is still not solved. Such kind of equation is not solvable at all, even numerically? Thanks.

PS: Is it possible to edit a posted question? Sometime I want to add more information but could not edit the old one.

Hi, again, I am a physist. It is convenient to solve problems in presence of units. I have a equation (1-variable) including a erf function to solve. As I substute all the constants (with units) and then use 'solve'. It returns a warning without any result. I am not really familiar with the numeric package in maple. Could anyone give me some advice? Thank you.

The MRB constant is defined at http://mathworld.wolfram.com/MRBConstant.html.

On about Dec 31, 1998 I computed 1 digit of the MRB constant with my TI-92's, by adding 1-sqrt(2)+3^(1/3)-4^(1/4) as far as I could. That first digit by the way is just 0.

On Jan 11, 1999 I computed 3 digits of the MRB constant with the Inverse Symbolic Calculator.

Hi, I am a green hand of Maple. I guess this is a common question for many users. Some times, Maple can not deal with an integral with a lot of symbols. However, if I manually simplify the integral somehow so that less simbols are left, keeping the main feature of the integral unchanged, it works. Thus, my question is: Is there some limitation that number of simbol can appear in the integral? What decides whether a integral works or not? Thank you.

Just wondering how many undocumented commands exist in Maple?  HTTP is only one I know about.  I believe documentation for it exists only in a help page on an older version of Maple, Maple 9 I think (but removed in newer versions), however it's functionality is still active in the newer versions. 

Any others?

Hello

I want to solve a cylindrical PDE with Maple. how can i solve it?

Create a maplet or worksheet for the game Blokus. 

On that note, we should have a counter or tally in the post to show how many people want to work on or are attempting to work on the challenge.  That way people can see if there is progress happening behind the scenes.

Mathematica has a way of clipping plot output to a region given by a function. See http://reference.wolfram.com/mathematica/ref/RegionFunction.html

Can I do something like that in Maple?

Jacques' post on the maple.vim project spurred this post.  Vim users cannot have all the fun.

About a year ago I wrote an Emacs front-end for the Maple debugger.  I've used it since---it is now my primary debugging tool for Maple code.  What it does is allow stepping through interpreted Maple code in an Emacs buffer.  That is, rather than being presented with a single line of...

Is there a way to import Latex into Maple? Actually, my immediate goal is to convert mathtype expressions into Maple.  I can convert Mathtype into latex. If I could convert latex into Maple, I would be done.

Incidentally, exporting Maple into mathtype is easy.

I have Maple 12.