I just opened maple to use it, and I receieved a notice that an update was available.  I proceeded with the update and it failed to install, complaining that "open programs" needed to be closed.  There were no open programs so I opted to have the installer "ignore" the warning.  However, it would not continue and it gave a list of two programs that were in use (even though I had closed Maple).  This is a snapshot of the warning.

It appears that the update may have completed as the maple version that appears during startup is 2026.1.  However, the program is very slow to open a new document (I have to click on the "New Document" button several times before it response) and very slow to close.(I have to click on the "X" icon (upper right of top menu) before it will close.

Any help would be appreciated.

Regards,

Frank DiJoseph

I use a personal licensed copy of Maple (Maple 2020.2).  In the "help about" dialog there is a clickable box titled "Reactivate License".  Does this imply that my license is not activated?  I have not had any issues with using the software.

Regards

Frank

[Moderator: removed image of help-about dialog showing purchase code]

I would like to generate a symbolic sum of the first "n" derivatives of a function.

For example, f = 1/(1-x^4)

sum(f^(n),n=0..3)

The response from Maple is not as expected.  The first term is:  -1/(4*(x-1)) and the subsequent terms are less recognizable.

If I use "seq" with the same syntax, I end up with a list that includes the function and the first 3 derivatives.

I have also tried:

sum(diff(f,x$n),n=0..3)

I am using Maple 14.

Assume I have an equation of two variables, theta and psi (actually using greek letters).  Both of these is a function of time.  Lets say it is something like F:= theta^2 + 2*psidot (where "dot" means first derivative and appears in the equation either as psi with overdot or prime - have tried it both ways).

I want to use diff(F,theta) and display the result "2*theta*thetadot" (i.e. thetadot is theta with overdot) or diff(F,psidot...