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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...


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?



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 . 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.

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?


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


I couldn't set plot view ranges for plot component (in the attached worksheet). How can i do that?

example worksheet has to draw an ellipse whose center coordinates are determined by two sliders (lef tslider for x, right slider for y). I used following callback function

Do ( xpos = %xPos );
Do ( ypos = %yPos );

Do( %Plot0 = plots[display]( plottools[ellipse]([xpos,ypos],3,4)), view=[-10..110,-10..110],axes=boxed );

When i try setting this task at prompt, it succeeds ...

The other day when I had a chance to have a look at Maple 14, I noticed the font looked much nicer.  So I had a look at previous versions and found out that the same font in Maple 14 compared to 13 is different?  Why is that? 

Both fonts were done at default (graphic user interface) - 12pt. Times New Roman and C text (just text mode)  In Maple 13 the font looks stick like, and in Maple 14 it looks more textbook like.  If they are different...

Mathematica has a way of clipping plot output to a region given by a function. See


Can I do something like that in Maple?

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.


I am working with coupled diff. equations to find equilibria (set equations to zero and solve simultanously). Currently I am working with two equations for predator prey systems. I have typed them like this:


> EqP := r*P(1-P/K)-h*P*M = 0;
                              /    P\   ...

Hi, Can anyone help me in solving the following system of ode, i'm new in maple and i faced some problems in using it.

the system:

diff(u2(y), y, y)+m*b*rho*h^2*GR*(c3*y+c4) = 0,

diff(u1(y), y, y)+K*(diff(N(y), y))/(1+K)+GR*(c1*y+c2)/(1+K) = 0,

-2*K*(2*N(y)+diff(u1(y), y))/(2+K)+diff(N(y), y, y) = 0

with the following boundary conditions

u1(-1) = 0, u2(1) = 0, u1(0) = u2(0), (D(u1))(0)+K*N(0)/(1+K) = (D(u2))(0)/(m*h*(1+K)), (D(N))(0) = 0, N(-1) = 0

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