odd mathematica blindspot

*To*: mathgroup at smc.vnet.net*Subject*: [mg56468] odd mathematica blindspot*From*: Edward Peschko <esp5 at pge.com>*Date*: Tue, 26 Apr 2005 01:33:53 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

hey all, I was wondering why the following didn't output any solutions. I'd think it would be easy: Solve[(999999999999/10000000000000)^x == .5, x] It gives no solutions. What's really odd is when you say: Solve[(999/1000)^x==.5, x] which *does* give solutions, in the form: {{x -> 692.801... }} Also, just curious, but how do you extract 'x' from the above? Say I wanted to plug the above solution into another equation.. In perl I'd say something like: y = Solve[(999/1000)^x == .5, x]; 3 * y->{x} # replaces with 692.81 etc. etc. but this doesn't seem to work. How do you access parts of a mathematica datastructure/hash? And finally, how do you set values with the tty? ie: suppose my backspace and delete key aren't working with math.exe (they aren't) and I want them to delete typos. In unix this would be stty erase ^H. In mathematica...? Thanks much for any help, Ed

**Follow-Ups**:**Re: odd mathematica blindspot***From:*yehuda ben-shimol <bsyehuda@gmail.com>

**Re: odd mathematica blindspot***From:*"Matthias Bode" <lvsaba@hotmail.com>