Subject: solve(...) and unnecessary complex results
From: herczegh at earthlink.net
Date: Thu, 21 Feb 2008 14:19:54 -0600
Hello folks:
Concerning the roots of x^3-4*x+2 you can show that the complex roots are
equal to the real roots by simplifying the list of complex roots with the
command polarform(). polarform() prompts: Is x positive, negative, or
zero? reply 0 You can apply polarform() to the list of roots returned by
solve().
David Billinghurst thanks for the reference to casus irreducibilis, I did
not know that
Rober