Wrong simplification of (-1)^(1/3)

• Subject: Wrong simplification of (-1)^(1/3)
• From: Dieter Kaiser
• Date: Sat, 29 Nov 2008 22:59:46 +0100

Thank you for the fast response and correction. You are right. 

 

Sorry, I have seen only one problem with the sign function and had no look at
the whole mathematic.

 

I think a complete solution of (-1)^(1/3) would be

 

-1, 1/2 + %i*sqrt(3)/2, 1/2 - %i*sqrt(3)/2

 

So we don't have a bug.

 

Next time I will think more carefully about the mathematic.

 

Dieter Kaiser

• Prev by Date: sign((-1)^number): Inconsistent handling of numbers
• Next by Date: sign((-1)^number): Inconsistent handling of numbers
• Previous by thread: Wrong simplification of (-1)^(1/3)
• Next by thread: Wrong simplification of log(1/z)
• Index(es):
  • Date
  • Thread