SOLUTION: P((1 + (r/n)) ^ (nt)) + PMT * [(((1 + (r/n)) ^ (nt)) -1 ) / (r/n)]=FV P=1000 n=12 t=10 PMT=100 FV=40000 find r Had go thru many research, found out that is impossible to

Question 1180736: P((1 + (r/n)) ^ (nt)) + PMT * [(((1 + (r/n)) ^ (nt)) -1 ) / (r/n)]=FV
P=1000
n=12
t=10
PMT=100
FV=40000
find r
Had go thru many research, found out that is impossible to use algorithm to solve to find r. The only method was using trial and error.

Answer by ikleyn(52815) (Show Source): You can put this solution on YOUR website!
.

This problem can be solved using numerical methods, that give approximate solution quickly with appropriate precision.

I solved similar problems.

See the lesson
- Solved problems on Ordinary Annuity saving plans, Problem 8
in this site.

I used free of charge ONLINE SOLVER at this web-site

https://www.wolframalpha.com/widgets/view.jsp?id=a7d8ae4569120b5bec12e7b6e9648b86

Yes, this solver does trial and errors, but it is highly professionally organized search with using
all contemporary advanced computational technologies for finding the roots of non-linear functions.

So, you can repeat my experience . . .

At the end, you may inform me about your progress and about your results.

It would be interesting for me to hear from you.

Happy calculations (!)

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