Plus42 Equations, Preview Release

[Thomas Okken]

(05-16-2022 08:47 PM)SteffenM Wrote:  I really like Plus42, thanks for all your work Thomas!

But I think I found a little bug in the TVM Solver.
I tried to solve the following problem:
“If I put 100 € in a stock that grows 10 % per year, after how many years can I sell it for 200 €?”

So, I keyed in:
P/YR = 1
I%YR = 10
PV = -100
PMT = 0
FV = 200
and pressed N …

My HP 17bII+ gives me 7.27
Plus42 says “Invalid Data”

Ouch. There is a check for PMT=0, which should cause Invalid Data if I is also zero, but instead, it complains about PMT=0 even when I is nonzero, which of course is wrong. I'll fix this tomorrow.