Solver Giving Nothing

[Tim Wessman]

(01-28-2017 04:53 AM)rpn314 Wrote:  I'm trying to simplify my life a bit with the solve in CAS. I've come across an equation that I don't understand the results of, or rather the lack of results. The equation is a type of system of equations, 2 unknowns and 2 variables.
127E-12=(a*b)/(a+b) and 8.377=((a+b)/b)^2 then solve for a and b. If I "help" it along by simplifying the second equation to be b*1.893=a, then the solve function gives me the results that I would expect. However if I enter it in just like above, it gives me nothing (returns []).

I feel like I'm missing something obvious, like a setting. Any ideas? I can post screenshots if it would help.

As a general rule, don't stick approximate numbers into the CAS else it can be unhappy. You can always insert an "exact( )" call around your function with decimals and it will normally be enough.