HP49-50G: MLSV OK for -1E-495, not OK for -1E-496, ROOT OK for both

[Gil]

Nicely seen that ln(x/a) = ln(-x/-a) =ln(-x) - ln(-a).

So we get rid of complexes, instead of having a final pseudo complex =a+0×i that would oblige to take only the real part.

With ln(-x) & ln(-a), we remain in R.

Much better!

Thanks.