MaplePrimes - Newest Questions

Why does Maple 2026.1 update fail due to open programs when none are open?

Frank DiJoseph — Mon, 09 Nov 2026 15:57:21 Z

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

plot syntax for two procedures

clararararararara — Sun, 08 Nov 2026 20:38:16 Z

f := x -> 6*x - 1;

g := x -> -2*x + 33;

plot(f(x), g(x));
Error, (in plot) unexpected option: -2*x+33

Use of parentheses in function application

C_R — Sun, 08 Nov 2026 20:16:59 Z

Why no parentheses around "%" are needed here

cos^2 + sin^2 = 1;
%(x);
                           2      2    
                        cos  + sin  = 1

                           2         2    
                     cos(x)  + sin(x)  = 1

as they are required here (to group terms)

(cos^2 + sin^2 = 1)(x);
                           2         2    
                     cos(x)  + sin(x)  = 1

Is it because % (?ditto) is an operator or because of an evaluation rule?

I know the opposite: Maple treats (sin)(x) the same as sin(x), i.e. removes the parentheses.
I also know that Maple has special evaluation rules for procedures (see ?last_name_eval) but the
"operator expression" cos^2 + sin^2 = 1 inside the parentheses is of type equation and not of type function/procedure.

I assume that % reevaluates a previously computed result stored in the kernel and not in the user interface but maybe I am wrong here. If equation labels are used instead of %, also no parentheses are needed, but in this case the equation label refers to output stored at the level of the user interface.

How to insert a section with the ribbon interface

C_R — Sun, 08 Nov 2026 17:29:57 Z

I could not identify a menu item in the ribbon interface under "Insert" (where it was with the former interface).

Looking for the difference of cubes

Alfred_F — Sat, 07 Nov 2026 10:02:09 Z

Let B and D be natural numbers. Prove that in the rational numbers there exist solutions (x;y) of the equation x^3-y^3=B^3+D^3 and the equation x^3-y^3=B^3-D^3, and find the solution formula and example solutions.

edited:

This problem becomes interesting when one searches for positive rational solutions x=x(B,D) and y=y(B,D).

Maple 2026.2 update

Ronan — Fri, 06 Nov 2026 16:26:23 Z

I see my Maple has updated to 2026.2 What has been inproved in this release?