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fsolve with financial functions - roadrunner - 05-26-2018 10:50 AM
In CAS: fsolve((Finance::TvmFV(48,x,0,-100,12,12,0)) = 5000,x)
returns empty brackets. I believe the correct answer is about 2.0%
Is fsolve not intended to work with the financial functions, or am I doing something wrong?
-road
RE: fsolve with financial functions - DrD - 05-26-2018 01:59 PM
fsolve((Finance::TvmFV(48,x,0,-100,12,12,0)) = 5000,x) is an interesting construct, but if it was designed to work that way, I haven't seen it.
Of course something like this could be used, instead:
X:=5000;
[CAS]
Finance::TvmIPYR(48,0,-100,X,12,12,0);
-or-
[Home] or [CAS]
Finance.TvmIPYR(48,0,-100,X,12,12,0);
RE: fsolve with financial functions - roadrunner - 05-27-2018 10:06 AM
Thanks for your help DrD.
I was considering a more complex problem that required an iterative solution but simplified it for my question here.
The same function (with an upper case X):
(Finance.TvmFV(48,X,0,-100,12,12,0))=5000
worked well in the solver app, as did the more complex problem; perplexing because apparently the solver app uses fsolve to get the answer.
Thanks again for your reply.
-road