Philipp, I just learned from the documentation website that you have recently joined forces with Dominique to maintain and further develop Formulas. I would like to thank you, and Dominique, for your work on this great tool, which for me (and probably many others) is among the most important and relied upon in Moodle. – Thanks a lot, guys!

The release notes for version 5.0.1 state a bugfix for custom functions. As I could not find anything in the reference, could you briefly say, what custom functions are or point me to an explanation?

Thanks for the positive feedback. The update for 5.0.0 unfortunately introduced a bug that stopped the custom functions defined by Formulas Question (= functions that are not already available in PHP, like ncr or sigfig) from working. And, to make things worse, unit tests did not fail, due to some other issue. Dominique discovered the flaw just a few hours after the release, so we could yank 5.0.0, fix the bug and roll out 5.0.1 less than 24 hours later. I guess no "user" really encountered the problem.

We are pleased to inform you that we have just released version 5.1.1 of the Formulas Question plugin, a bugfix release that fixes issues with the sort() and fmod() function as well as some minor problem with the instantiation check.

We have just released version 5.1.2 of the Formulas Question plugin, a release containing a fix for the map() function.

We are pleased to announce our newest release. Version 5.2.0 fixes a bug with the gcd() function and introduces functions to calculate probabilities for binomial distributions.

DynamicCourseware.org* is currently being updated including Ubuntu, PhP and Moodle, which requires some time offline. The site should be back online soon. We apologize for any inconvenience and thank you for your understanding.

* containing full documentation for the Formulas question type.

Moodle 4.2 has just been released. We are happy to announce that the most recent version of the Formulas Question plugin (version 5.2.1) is fully compatible. Have fun!

We have just released version 5.2.2 of the Formulas Question plugin, a bugfix release.

Moodle 4.3 and 4.2.3 have just been released, bringing support for PHP 8.2. We are happy to announce that the most recent version of Formulas Question (5.3.0) is fully compatible.

Wasn't there a moodle course in how to use this? I've forgotten a lot...

It's https://dynamiccourseware.org/ and the link ("More documentation on this plugin") is just at the top of this page in the section "useful links"…

We have just released version 5.3.1 of the Formulas Question plugin, a bugfix release making sure that a risky grading criterion cannot crash a question or even an entire quiz.

We have added further stability improvements and released version 5.3.2 of the Formulas Question plugin. Sorry to those who have already updated their installation, this could have been added with the last version already.

Moodle 4.4 is going to be released very soon, bringing support for PHP 8.3. We have just released version 5.3.3 of the Formulas Question plugin and are pleased to announce that it is fully compatible with all recent versions of PHP and Moodle.

Please note that this is (probably) the last version for Moodle < 4.1 and PHP < 8.0. The next major release will focus on the more recent versions.