Posts: 34
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I believe the problem is due to the fact that isol only works for one instance of a variable. In other words, isol will not behave as a 'symbolic solver'. I tried your problem on my 48g+, which results in an error message. Perhaps the 28c, lacking the user interface shell of the 38/48, simply did the best it could, treating the second instance of the variable VG as unique.
-Ned
Posts: 1,792
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This problem produces an error on the 48G, as Ned found out. However, the 49G handled it fine, as I'm sure the 49G+ does (when the keyboard works properly).
Of course, I could have doen that easy algebra problem on paper in the time it took me to have the 49G do it.
-- KS
Posts: 97
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Joined: Jan 1970
The better way: RTFM. I'd found the answer... ;)
Cs.
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