error with Solve App

[rprosperi]

Jose, Dale & Helge:

Thanks for your comments. I agree it's best (likely essential) to use CAS features in CAS mode, Home features in Home mode, etc. to get expected results, as this minimizes most mode issues.

Jose - I am using the command line in Home, not the Solve application, which explains our different results.

What concerns me is when I get invalid results, like in this case as I noted above, with no hint that the requested features, mode, etc. aren't valid. The command I entered in Home mode was accepted, and a seemingly valid answer provided, however it is completely wrong.

Things like this erode my confidence in using Prime, as I can't trust the answers it gives me. I'd much prefer in such case I get an error or warning, so at least I have a chance to notice I may be in the wrong mode, used lower case instead of UPPER CASE, etc.

The reason I asked for an explanation is not to understand why it gave me an invalid answer, but rather why it gave this answer at all, which I presume actually is valid for some non-obvious conditions which CAS used to evaluate the solve() call.

Hope thats more clear.