CAS and exponents issues

[parisse]

(09-27-2018 11:30 AM)sasa Wrote:  WolframApha return results in the same manners, except it handles \(9^{1/5}\) correctly, which indicates that problem is in the CAS, or missing appropriate settings.

The problem is not in the various CAS but in your expectations of what a CAS shoud do: "The CAS in theory should mimic human behavior in solving math problems". A CAS is a software that can solve some symbolic problems, but it does not necessarily handle and store objects like a human does. Integers and rationals are always stored as integers or irreducible fractions of integers in a CAS, and never as expressions.