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ratnz: Solve
*To*: mathgroup at smc.vnet.net
*Subject*: [mg122027] ratnz: Solve
*From*: Themis Matsoukas <tmatsoukas at me.com>
*Date*: Sun, 9 Oct 2011 03:54:01 -0400 (EDT)
*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com
I am solving these two equations:
equations = {
2721. == 2582.9 (1 - a) (1 - b) + 2580.1 a (1 - b) + 2968.3 (1 - a) b + 2967.7 a b,
1.95 == 1.9367 (1 - a) (1 - b) + 1.2856 a (1 - b) + 3.1027 (1 - a) b + 2.0671 a b};
When I use Solve[equations, {a, b}] I get the message
Solve::ratnz: Solve was unable to solve the system with inexact coefficients. The answer was obtained by solving a corresponding exact system and numericizing the result. >>
but when I use Solve[equations] there's no such message. In both cases I get the same solution:
{{a -> -120.403, b -> -1.65149}, {a -> 0.516063, b -> 0.361015}}
What is Mathematica trying to tell me?
Thanks
Themis
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