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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
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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.