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Re: Simplifying the root of a quadratic

• To: mathgroup at smc.vnet.net
• Subject: [mg63924] Re: Simplifying the root of a quadratic
• From: carlos at colorado.edu
• Date: Sun, 22 Jan 2006 00:52:40 -0500 (EST)
• References: <200601210650.BAA11332@smc.vnet.net><dqt123$jj1$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

I agree with this explanation.  But there is a fundamental question:
why should I go through all those gyrations to do such a trivial
simplification, which a C undergraduate student is supposed to
know?

Over 99% of my personal time with Mathematica in research
work has to do with substitutions that dont substitute and
simplifications that dont simplify.  And the documentation does
not help in either case.

• References:
  • Simplifying the root of a quadratic
    • From: carlos@colorado.edu