@Preben Alsholm There are more errors, e.g. thata vs theta in the spoke procedure.

Hint to @Rouben Rostamian: maplemint(<your proc name>) will detect that.

Also, I would not use short form of package commands in procedures - better insert uses plots, plottools: in all of them.

@Rouben Rostamian  The problem seems to be the derivative in the integrand - that case is not covered by intsolve routines, so it is being rejected (with an incorrect error message, though).

@Mariusz Iwaniuk We are grateful for feature suggestions, but please understand that we cannot give a public commitment about implementing non-trivial features in a certain timeframe (or version).

@Rouben Rostamian  I'm afraid this won't help much, as fracdiff doesn't handle unspecified alpha either (which the OP requested). fracdiff is useful to compute the fractional derivative of a given function, though.

And Maple has the intsolve command, but it's limited to linear integral equations.

@Realeboha No, I said it's not possible to solve such equations using dsolve. There may be other techniques, but I'm not an expert, sorry.

@Konstantin@ For the last 11 major releases, you can find that information at

https://www.maplesoft.com/products/maple/new_features/
https://www.maplesoft.com/products/maple/new_features/maple2020/
https://www.maplesoft.com/products/maple/new_features/maple2019/
https://www.maplesoft.com/products/maple/new_features/maple2018/
https://www.maplesoft.com/products/maple/new_features/maple2017/
https://www.maplesoft.com/products/maple/new_features/maple2016/
https://www.maplesoft.com/products/maple/new_features/maple2015/
https://www.maplesoft.com/products/maple/new_features/maple18/
https://www.maplesoft.com/products/maple/new_features/maple17/
https://www.maplesoft.com/products/maple/new_features/maple16/
https://www.maplesoft.com/products/maple/new_features/maple15/

There are also summaries back to the turn of the millennnium on the product history page.

Minor releases (updates) typically introduce no new features.

@michalkvasnicka As far as I know, there is a problem with the toolchain that's generating the PDF. For now, please use the Programming Guide that's built into the product.

@markweitzman I agree that this particular one should be covered by default, but there will always be elegant approaches that a human just "sees" - which a computer (or an algorithm, more precisely) cannot do.

Could you please upload your worksheet so that we can reproduce the problem? Use the green arrow-up icon of the message editor.

In the screenshot, I see that you entered f and g directly, or perhaps copied & pasted from the evalc output. Better assign that output to some variable, say expr, and then call Re and Im, resp.:

expr := evalc(...);
f := Re(expr);
g := Im(expr);

@Thomas Dean I saw from the output (memory usage and timing) that you used command-line Maple, so I used that as well (Maple 2020.2 on a Ubuntu box). It reliably found the factors after a while - no crash.

Can't tell about the maplev-mode, though, as I'm not using Emacs.

@A_Ebrahimi I cannot make much sense of your reply. But I see that you opened another thread with the right command, namely Student:-Calculus1:-ShowSolution. That's okay.

But please do not post images of Maple code. Most people here (including me) will not type in anything from a screenshot. Upload your worksheet instead. That's very easy, using the green arrow button of the message editor.

@A_Ebrahimi Sorry, I don't understand your question...

I cannot reproduce that. On my two Windows 10 machines, F1 etc. works reliably, no matter how often I close and reopen the help window. My Windows 10 release is a bit older (version 1909), though.

What is your setting for Tools > Options > General > Help Language?

Did you get any warnings or errors during installation? If so, it might be helpful to send your install log to support@maplesoft.com, along with the problem description.

@Carl Love I know what you mean - I was one of those others too. ;-)

@Carl Love Yes, we had to delete-as-SPAM the Answers first, then the Question.