First, the shortcoming: Open a new Maple worksheet (I always work in Worksheet mode, so I haven't tested what happens in Document mode), and type anything in 2D Math Input into a line but do not execute that line. Save the file, then open it in a text editor or word processor. If you scroll down to the line containing the information for what you just typed in, you will notice that the attribute "input-equation" will be null; that is, it should say input-equation="" Even though there is input on the line, Maple doesn't add anything to the "input-equation" attribute until the commands are executed.

I would like to use OpenMaple from VBA. I seem to have no trouble starting Maple from VBA, but I cannot sucessfully make any other function call - the application hosting VBA will immediately crash on the call. My hunch is that there is some sort of memory violation issue with the callbacks, but I'm not sure. Should I make modifications to the header files? Has anyone sucessfully used OpenMaple from VBA, for example with excel? Thanks in advance

I had a question regarding importing NURBS geometry into Maple with a complete R^2 -> R^3 definition of the underlying surface function. Im currently modeling in some CAD software and would like to use Maple for some surface analysis. I can save the surfaces as STEP or IGES, for example. As far as I know there is not a STEP or IGES import for maple, so I have been writing one of my own. However, this also requires getting some NURBS libs for Maple (which I have found), and in general it is a little complex. Is there a better way to get NURBS geometry into maple? Thanks in advance

Students do the craziest things. This was an interesting bug to run into. The following lines all cause Maple 11 to lose connection with its kernel: solve( x-x = 0 ); solve( x-x = 1 ); solve( x-x = -1 ); Whereas, the following lines do not cause Maple 11 to lose connection with its kernel: solve( 1=0 ); solve( x-x+1 = 0 ); solve( x-x-1 = 0 ); solve( x=x+1 ); solve( (x-x)^2 = 0 ); solve( x-x = x ); This message has also been sent to support@maplesoft.com

What shall I do when I recieve an error message in Maple10 saying Maple was unable to allocate enough memory(for example as a result of computing a large determinant of 3 parameters(13*13 or even more)). Can Maple11 compute such a det?

Is there any any algorithm for computing large determinants of polynomials?

Hi all, My question is: WHY is underscore (_) used to represent subscripts of parameters in equations? This is what i observe in most of the maple documents/worksheets from the application center. Why isn't the math form (Shift + _) used? The subscript can also be represented as, for example, k[1] in the text form. Any particular reasons? AKS.

I installed Maple 11 a while back without any problems and have used it without any problems for a while as well. Recently I started using it again after a short hiatus and it does not boot. I get a message that tells me that the jvm.dll file found in <maple>\bin.win is not a valid Windows image and then another error message telling me that there was an error loading it. I can still use Classic Worksheet Maple but when I try to use the preferences option the same message appears. Any idea how to fix it? I don't have an installation disk as I downloaded it directly from MapleSoft. Thanks for a

Hey everyone, I have a system of equations that is kind of complex, and would like to create a generic solution for it, but I am not sure if this is possible. I have 6 equations, and only 4 unknowns. These equations are describing a physical system, so there is a solution to the problem, and will always be a solution given the imputs from the physical system. All of the equations are of the form: A+B*Sin(theta1)+C*Sin(theta2)+D*Cos(theta1)+E*Cos(theta2)+F*Sin(theta1)*Sin(theta2)+G*Cos(theta1)*Cos(theta2)+H*Sin(theta1)*Cos(theta2)+I*Cos(theta1)*Sin(theta2)=J+K*Sin(theta3)+L*Sin(theta4)+M*Cos(theta3)+N*Cos(theta4)+O*Sin(theta3)*Sin(theta4)+P*Cos(theta3)*Cos(theta4)+Q*Sin(theta3)*Cos(theta4)+R*Cos(theta3)*Sin(theta4)

Hi, I'm having a problem optimizing a function using Maple. To be perfectly honest, it took me quite a while to realize that the problem was with maple; as it stands, changing the limits of optimization affects the final answer, despite the maxima always remaining between the limits. That is to say, given a function whose maxima is at, say, x=5, trying to find the maxima between the limits 3-9 gives a completely different than finding the maxima between the limits 4 and 6. This isn't a poorly behaved function, as evidenced by the attached graphs, so I'm at a loss to explain this behaviour.

Hi is this impossible to solve? eq1:=A/(G+1/(1/V+1/(Y+1/(1/Z+1/X1))))/2=M1; eq2:=A/(G+1/(1/V+1/(Y+1/(1/Z+1/X2))))/2=M2; eq3:=A/(G+1/(1/V+1/(Y+1/(1/Z+1/X3))))/2=M3; solve({eq1,eq2,eq3},{V,Y,Z}); It takes forever..

In Maple 11 Standard Interface, occasionally text will be entered in UTF-8 encoding. I have not exactly found a rhyme nor reason for this to occur. Sometimes, it will occur when I am formatting text in a paragraph to be more readable. Sometimes, it will occur when I copy output and paste it into a command line to be executed. Sometimes (and this one is the oddest I've found), it will happen when I go into a line with a string and add a \" inside the string. The UTF-8 encoding is becoming a very large problem, as when it occurs on a command line as in the second instance, Maple will very often interpret the command incorrectly.

I wonder why

a,b := NULL,NULL:

does not work, leading to an error of ambiguous multiple assignment, whereas

a := NULL:
b := NULL:

does work. Nothing critical of course, just mysterious, or what?

Concerning custom indexing functions it seems that there is nothing analogous to TypeTools:-AddType(...), with which you can define new types as

TypeTools:-AddType(name,handler);

where, most importantly, name may be a variable. How can something similar (i.e., the name being given by a variable) be accomplished for new indexing functions when the only available option for defining those seems to be something like

`index/name` := proc()
   # something
end proc;

where name cannot be a variable?

I have Maple 11 installed on PC running on Vista, the classical version works fine, but the standard version doesn't. In fact I'm not even able to open it. I've tried uninstalling Maple 11 to reinstall it after but the uninstallation process doesn't run neither. I also tried reinstalling Maple 11 over my existing installation but the installation process shuts because Maple Reader is already installed. Now Maple 11 doesn't even display in my list of installed programs. How to get that fixed?