Ln of a complex number

[Quadratica]

Thanks hp-zl and Chan for those replies.

The Ln (a+i*b) works as you suggested and I am very pleased about this one as I use complex logs a great deal. The cubic is not a big issue and as pointed out its exact solution is too messy to be of any real use.

The more I learn about the Prime the more I like it and it suits the kind of mathematics I need it for. It really is a welcome change after 12 years of the nspire.