(Free42,DM42) NPV and IRR

[Werner]

Investigated a little further..
and, of course, what looks like the same result isn't.
Supplying guesses 1 and 2 produces IRR%=2.04169...67997, which does not evaluate NPV to zero. Since the guesses do not span a root, it is possible that the algorithm stays in the positive part.
Supplying guesses 2 and 3, for instance, results in IRR%=2.024169..68027, and the resulting NPV *is* zero.

Werner