@GFY 

This question is often asked.
I have only read the programming guide that comes with Maple. It's not really a book for learning.

Try searching here on MaplePrimes, and if you don't find anything, ask here, with topics that interest you.

@Scot Gould @Carl Love
Thank you for the clarification.

I overlooked that mod works on more than numbers. I also did not pay attention to the fact that mod works for "digital clocks" only but not for "analog clocks". I could not find an equivalent command that works on floats. Do I really have to do something like this

fmod := (t, modul) -> frem(t - 1/2*modul, 10) + 1/2*modul;
plot(fmod(t, 10), t = 0 .. 100);

One example, where this is extensively used is phase wrapping in signal processing. (I could use arctanxy for this, but that is also not straight forward).

By the way MapleSim does not restrict mod to integers

Looks like an infinite loop

@one man 

Thank you. I have to study this. What I learnd so far:

It's about common solutions of a system of equations.

Already the bivariate case can be non-trivial

@Thomas Richard 

The example from vv nicely shows how a parameter (velocity, acceleration, jerk,...) could be overlayed on a path. A usefull addition if it can be combined with a color bar.

vv example also shows that only expert users can do such things at the moment.

@mmcdara 
Intersting: I did not know that the color option accepts the plot structure COLOR. Is that an undocumented feature?

The problem (for choosen numerical parameters) is ill-conditionned because it can be reduced to

which has no solution appart from the a trivial one where a__1=0 and c__1=0 (which solve cannot find).
However, the way to solve, that I have provided below, should give solutions for other numerical parameters. Here is an updatad version using exact numbers
nonlin_sys.mw

@GFY

Yes, that is what I meant by: "For equation 3 you get in the same way 2 more equations sets of solutions".

These solutions are only valid for a subset of equations: equation 3, and equation 2, and equation 4.

I did not check if there is in all subsets of solutions a theta_3 that fullfils equation 1 and 3 at the same time.

We are dealing here with a complex argument which is beyond my comfort zone

FunctionAdvisor(plot,tan)

It seems that the real part of the two different solutions for theta__3 is Pi/2 spaced appart.

@acer 

I would not call it a bug. It comes with the design of the labels. Can't the labels be turned on permanetly in help pages. Its essential information when referred to. I use them allot in techincal documentation.

I cannot reprocude the mixed input of 1D Math and 2D Math.

I did in a rather new Maple session (Maple started in 2D):

?D  -> changed to 1D view -> copied the input -> new worksheet -> pasted the input

@dharr 

I will pay attention to this in the next update.

@Axel Vogt 

I could fix it. Thanks

 @rlopez @Carl Love @Ronan 

I had two Maple sessions running for 2 weeks. About a week ago, I noticed that the submenus had reappeared and I could not trigger the disappearance as described above.

Yesterday I restarted the laptop and the first application I started was Maple 2023 followed with a bit delay Maple 2024 (see startup times below). Submenues disappread in both Maple instances, as expected, after the system went to hibernation. After starting a pdf reader (Foxit), the submenus were back.

I could repeatedly toggle submenu dissaperance by: closing Foxit -> Hibernation -> wakeup (&checking if submenus were gone) -> starting Foxit (&checking if submenus were back).

After system wakeup today: No submenues. Toggling as described above did not work. After about an hours submenus were back in the Maple 2023 session. The only activities I can remember were browsing in Firefox, Outlook and web applications running in Microsoft edge.

After about an hour the Submenus appeard again in the Maple2024 session.
These are the tasks running in explorer.exe and their startup times (Maple 2023 java task highlighted in grey)

I have now restarted my other Laptop with one Maple 2024 Session. After the first hibernation submenus disappeard. I could not get the menues back as described above.
After writing this post I checked again and ... the menus are back.
I will try to repeat this. This time without launching any other programs appart from Maple 2024.

@Christian Wolinski 

Chrome uses information from previous user entries (on all web forms not only MaplePrimes) to help you filling in, autocomplete or correct new entries in web forms. Chrome tries to guess what you want to enter. Whether this happens with-in Chrome or accros applications is difficult to say. The tendency is clear. With AI assistance tools all user actions (including old mails and documents) are targeted to be analysed to make our live easier for "free" (there is no free lunch).

I use mostly Firefox and have so far not seen login credentials suggested in searches.

What is wrong here? I cannot find this package.