When I tried to install Maple 12 on my PC, I got a Java-related error as follow:

My OS is Windows XP Professional with SP3. However, I managed to install this version on a virtual machine (which also runs Windows XP SP3) therefore the problem does not come from the installer.

What can I do now to install Maple 12? I really need this software...

Thanks!

Hello everyone,

Here is what confuses me: There is a function with the symbol "I" in it, and Maple can still plot it in the 2-d Euclidean space. And here are the details:

The function I want to find the inverse of is f := x->piecewise(x <= 2, 13-8*x+4*x^2-x^3, x <= 3, -39.13953960+64.18605280*x-29.08139810*x^2+4.011628300*x^3, x <= 9, 8.013637628-3.472493940*x+.3065739839*x^2-0.1316006154e-1*x^3)

I'm running Ubuntu 8.04 on an AMD Athlon64-X2 (AMD64), and found that "xmaple" did not work right out-of-the-box when I first got Maple 12. There was a bunch of error messages in the terminal I started it from regarding lock assertions or libraries not found, printed by the X-Windows libraries. I also had the problem where it won't print via CUPS.

Hi

I have just purchased the download version to install on my HP dv900 laptop.  I have 2Gb RAM and over 137Gb of hard drive space available.  My account has full administrator privileges, but when I try and install the software I get a InstallAnywhere error telling em to choose another location to extract the installer file.

I have tried everything I know to try and install the software, but to no avail.  I need this software for my Multivariate Calculus class, co any assistance will be gratefully received.

Regards,

--Mark Millward

f := proc (x) options operator, arrow; cos(x)-x*sin(x)+1 end proc

_EnvAllSolutions := true

solutions := [solve(f(x) = 0, x)]

evalf({%})

What is up with that solution at zero?  And if this function is plotted, there is clearly a solution at around x=1.3.  Maple does not see this, is there a setting I missed?  Thanks.

Please.. Anybody explained this plot?

Thanks & Regards

Ravikanth Aluri

Everything below is "as far as Maple is concerned".

The following indicates that infinity does not satisfy the property of being real.

> is(infinity,real);
                                     false

But this next pair indicates that infinity is real. They show that infinity satisfies the nonstrict inequality relation equivalent to the 'real' RealRange, from which it would follow that infinity is in the 'real' RealRange.

I have never had this problem in other versions. But in Maple 12, some search topics (sum, add, for instance) are guaranteed to lock it up. In addition, after a short series of HELP searches, the search operation locks up. It sems to be inevitable, search enough times, and it locks up. At the suggestion of Maple staff, I uninstalled and reinstalled Maple 12. It did not help.

I am using maple 10 and saved a worksheet yesterday. Today I tried to open it but it says "There were problems during the loading process. Your worksheet may be incomplete." And parts of my document is gone.

I searched this and found somebody had this same problem back in 2001. But there was no informtion as to how to maybe recover the contents. Any ideas?

Thanks a lot.

Hello,

ich have an economics model considering the effects ot temporary work on the labor market. Under a specific calibration of the model parameters, i arrive at the following "flow" eqautions, that determine the relative magnitude of "regular employment" E, "unemployment" U and the temporary work sector A and T. The flow equations are:

Dear all, I need some help with this program I have. I ran this recursive system only to find that it stopped working at 1.89Gb. Anyone out there knows the problem or maybe there's a better way of writing this program?

In ?property > Description it is stated:

A property can be:
...
(2) most types (this includes constant values, for example, 0)

E.g. I can do:

assume(x,1):
about(x);

Originally x, renamed x~:
  is assumed to be: 1

is(x,1);
                                    true

But, I am missing a useful example for such a property.

Besides, I find these properties confusing as 0 and 1 have parent properties entries in the property lattice, but not 2:

This behaviour of 'assume' puzzles me ... 
and it needed some time to locate it
 
  restart; interface(version);

  Classic Worksheet Interface, Maple 12.00, Windows, Apr 10 2008 Build ID 347164

  assume(a::real); 
    #a:='a'; # activating removes the problem
  f0:=x+a; 
    #a:='a'; # that would not help - since is in use?
  assume(0<a);
  f:=collect(f0,x);

     ...

I'm running into a problem with Maple where DotProduct seems to destroy the functions it assigns.

I ran a simple case, and it seemed to work just fine: (dotproductproblem.mw)

However, my code seems to follow the exact same logic but doesn't want to work? Code is a simple check that a bessel function solution of current density follows Maxwell's Equations. (Cylinder_AC_test2.mw)

Maple 11.

Has anyone encountered this problem before? Or know what's wrong in the code I'm running? (code attached)

Dear ODE enthusiasts and Maple developers,