@Carl Love 

Thank you for your highly informative and well-written post. As someone attempts to teach basic Maple usage to students, I will continue to refer to your work here. The Programming Manual heavily emphasizes the word "name" rather than "symbol". The word "symbol" appears precisely only twice in chapter 1 and once in chapter 2.

Decades ago when I first became aware of Maple, there was heavy use of the catenated variables. But then it fell into disfavor. Given that they are always global, I understand why now. I don't remember reading this information in the Programming Manual. Nor do I understand why the authors of Maple would adopt this policy. Regardless, major upvote.

Note, I tried to email you directly, but Google rejected my academic address. 

@zenterix 

Download Context_Panel.mw

Download Non_executable_math.mw

Both systems have their benefits. However, there is one fomat that is popular with those who read Maple which I interpret as the worksheet-document hybrid.

Write everything in a worksheet mode.  Then when ready to share with others, either hit F9 or deselect the option under View --> Show/Hide Contents --> Execution Group Boundaries

Without the execution and text group boundaries, the "document" has much of the appearance of a document but still with the structure of a worksheet.  

A small request. Any chance you folks can add information about Physics:-Version() to help, and to make reference to it in the Physics Overview section?

@jschatzman Refering to A), like many other computing languages, the Maple language is case sensitive. Hence pi does not equal Pi. 

Pi is the defined constant. pi is a variable. (Another example is the variable "e" and "e" which equals exp(-1).) However, when Maple displays either, it appears as the Greek letter, i.e, it appear the same. (There has been requests to have the defined constant displayed in a different color. However, since I suspect so few people use the variable pi, more folks would be annoyed by the change in color.) 

If you use Common Symbols palette, Pi is distinct from the pi character in Greek palette.  

For the defined constants, you can go to this webpage:  https://www.maplesoft.com/support/help/errors/view.aspx?path=initialconstants

@Rouben Rostamian  Again, with this newer worksheet, no black image appears in Windows 10. 

The only reason I mention the graphics board / video setup is because I have an even weirder problem. When I have Maple open and I turn off the primary monitor (Dell 34"), Maple quits. No other app / program quits. This occurs both in 2021 and 2022.  I'm not even sure how to report it as a bug. 

..but when I open the worksheet, the tubes are red and red. I'm using exactly the same version of Maple 2022.1 that you are. 

Re-executing the worksheet also produces red and red. 

I don't know what graphics card my Dell (Windows 10) laptop is using. 

@TechnicalSupport A quick check using Maple 2022, the copy of a 3d plot as an image does properly paste into a Word document properly.  Thanks for the fix.

@Carl Love  I was not aware of this format.  It is more readable than my Matrix call.

But to for those who may use your solution precisely, the number-sign/hashtag at the end of the last line is not necessary. 

I agree, for those who like quantitative puzzles, Nonograms are delightful to solve.  They are a combination of art, mathematics and logic. This little app in Maple Learn is fun for creating one’s own Nonogram. 

However, it leads to a question. Given the fact one can construct a puzzle for which there are multiple solutions*, is there a simple algorithm which can determine if a puzzle possesses only one solution?

* Example: 2 x 2 grid with the top header: 1, 1 and the left header: 1, 1. 

@Preben Alsholm  I was looking forward to seeing the results for the function I call to convince undergraduates that they spent too much time memorizing techniques to solve integrals when they could have called:  Student:-Calculus1:-Tutor() .

@TechnicalSupport  One of my students reported the same problem when using 2021.2.   As I mentioned, they chose to unstall Maple, and re-install, sticking with 2021.1 version. 

@janhardo I guess my toy example has no closed-form solution. For me as a physicist and physics educator, that is rarely an important issue.  

Note: Thanks for introducing me to Student:-ODEs:-ODESteps.  It is pretty cool. I will show it to my students. They will groan because they have spent weeks practicing how to solve ODEs without the use of a computer. 

@janhardo  My apologies, but I don't understand your question. Are you referring to how I wrote the equations, or are you referring to how the solutions are presented in blue?  I wrote the expression for the derivatives as y’ or y’’, but I could have written them as y’(x), y’’(x).