Incorrect results and quirks

[Arno K]

Hello Binary0,
thought I should give that a try, as I only own that Prime for one week and so need to play with it . I entered your equation:
>>Issue#1: When I graph the function:
>> F1(X)=(X^2-4)^(2/3)

>>It does not graph -2 < X < 2,... it returns "NaN" for that region.
and you are right. Then I did:
F1(X)=(X^2-4)^2, F2(X)=F1(X)^(1/3), F2 was correctly plotted.
Conclusion: the plotting system in the prime and the underlying CAS first evaluates log(x^2-4) which clearly is not a real number, then using the exponent and after that does alog(result), here Bill_G gave the answer.
So I started to look in the settings Switch Home Settings: Complex to "Checked", reentered your equation and : that was the solution, it is correctly plotted.
Hth Arno