for Amount.t_solver, handle multiple roots

genedan / TmVal

Time Value of Money - a Python package for mathematical interest theory, annuity, and bond calculations.

https://genedan.com/tmval/docs

GNU General Public License v3.0

27 stars 4 forks source link

for Amount.t_solver, handle multiple roots #61

Open genedan opened 4 years ago

genedan commented 4 years ago

This won't pop up with the common growth rates but for complex growth patterns, it's possible to have multiple solutions. See problem Vaaler & Daniel 1.8.5 for a simple case that works.