Dear Hans,

Thank you for your new module for math.

If possible, I prefer to use 
$ \sqrt(x) = \compute\sqrt[.3N] {2} $		
$ \pi = \mathexpr[.40N]{pi}            $

It is more direct to use and good to write a text in which we need some math calculation.
It is another good news for me.
I hope it covers at least all the functions in metafun and in lua.

Best regards,
Dalyoung