41C/CV root finders

[bshoring]

(05-28-2015 06:19 AM)Ángel Martin Wrote:  

(05-27-2015 10:09 PM)bshoring Wrote:  I'm curious, has anyone tried out this example on either the Finance Pac or PPC ROM TVM programs on the HP-41 ? Does it yield the results shown above or does it give an error message?

I just tried the Advantage's TVM and the PPC's FI - both flunk.
They are also included in the TVM Module BTW

So it's a relief to see how my TVM$ MCODE implementation succeeds, even if using more iterations than the optimal ;-)

Cheers,
'AM

For what it's worth, I played around with a few scenarios where the PV & FV are of the same sign and the PMT is of the opposite. When set to Begin Mode, it will compute "I" if PV is very small and FV is much larger, say 6 and 390 respectively. If in End mode, the reverse is true. Otherwise I get Error 5. This is on an HP-37E.