In Maple 2025 we are having problems with units.

In Maple 2024 we did not see same errors. Maple sheets working with Maple 2024 does not run in Maple 2025.

In Maple 2025, some units which are f.x. obviously 'J' is not recognices as 'J'.

In Maple 2025, part of units dissapears from expressions.

Just an example; the function v(t) below has correct units m/s, but when using simplify, the unit is changes to m

The Maple file: Error_with_units.mw

Assume

a:=2 m

b:=3 m

I will then calculate A as a times b, but Maple just gives med the answer 6 m².

I would like the output to become:

A = a * b = 2 m * 3 m = 6 m²   (with * as normal multiplication-dots)

It is possible to write at proc with the above output? It should work for any expression.

The argument of the function should just be the name of the expression. Fx:

showCalculateProc(A)

The showCalculateProc(A) should then give the output

A = a * b = 2 m * 3 m = 6 m²         (with * as normal multiplication-dots)

I know about InertForm[NoSimpl], but it doesn't do all I want it to do, and not so nice output (* as multipliction)

Thanks.

Maybe I am missing something here. Maybe it's just a new feature?

I have just installed Maple 2021 on Mac.

A simple sheet, using simplify-simplify to get units right.

Sometimes Maple doesn't update result when pressing Enter.

Sometimes Maple doesn't give any result when pressing Enter.

First everything ok:

Then I change a to 5 m. Pressing Enter on all three lines gives:

The value of A is not updated.

If I then delete the 'simplify 9 m^2' and presses Enter on the line with A:=a*b, there is no output?

Pressing Enter on blue line, no output.

I defined x(t) and y(t) with units; motion in gravity, motion in y-direction with constant velocity, motion in x-direction as motion with constant acceleration.

x := t -> 10*Unit(('m')/'s'^2)*t^2;

y := t -> 50*Unit(('m')/('s'))*t;

plot([x(t), y(t), t = 0*Unit('s') .. 5*Unit('s')]);

Error, (in plot) invalid terms in product: 0 .. 5*Units:-Unit(s)

It works fine if I remove the units.

Also I can plot graph for x(t) and for y(t) with units, but not graph for [x(t), y(t)]