Numeric warnings during symbolic manipulation

*To*: mathgroup at smc.vnet.net*Subject*: [mg112759] Numeric warnings during symbolic manipulation*From*: Yaroslav Bulatov <yaroslavvb at gmail.com>*Date*: Wed, 29 Sep 2010 04:15:45 -0400 (EDT)

Last two expressions are equivalent. Why does the second one gives "N::meprec" warnings? Also, is there a good way to stop Mathematica from running N on my intermediate expressions? a = 2/(4 + 1/E^2 + 2 E^2 + E^6) + E^2/(4 + 1/E^2 + 2 E^2 + E^6) + E^6/(4 + 1/E^2 + 2 E^2 + E^6); b = 4/(4 + 1/E^2 + 2 E^2 + E^6) + 1/( E^2 (4 + 1/E^2 + 2 E^2 + E^6)) + (2 E^2)/( 4 + 1/E^2 + 2 E^2 + E^6) + E^6/(4 + 1/E^2 + 2 E^2 + E^6); Exp[Log[a/b]] Exp[Log[a] - Log[b]]

**Follow-Ups**:**Re: Numeric warnings during symbolic manipulation***From:*Daniel Lichtblau <danl@wolfram.com>