Thank you for the submission! The comment just below createPow in pow.js also needs to be updated, and in the examples there it would be good if at least one of the examples used a negative and/or non-integer exponent. It would also be good if there was a matrix example (not necessarily with negative exponent, either way) in src/expression/embeddedDocs/function/arithmetic/pow.js. If you can make these documentation changes we should be able to move this PR along, thanks!

The documentation has been updated, thanks.

This is looking quite reasonable. Turning on the regression tests in this PR.

Hmm, there's still a failure in build-and-test; I don't know why, but I can never see the error in these CI reports. But anyway @HanchaiN you can run npm run build-and-test locally on your end and see what is up, thanks.

Thanks again @HanchaiN 👍