Finance help

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Finance help

Mr Dino 09 Sep 2011 02:25

I made an Algebra 2 App for the 83/84 using basicbuilder and signed it. At the beginning, it had a sort of 'security lock' checking for Finance Variables (I did this so that a very annoying kid at school I know wouldn't start sending to everyone). It went like this:

:If ‾.5585106809≠tvm_Pmt(N,I%,PV,FV,P/Y,C/Y)
:Then
:Output(1,1,"PLEASE HAVE ME ACTIVATE THIS FOR YOU
:Pause 
:Return
:End

I thought that setting 6 to N, 45 to I%, and 1 to everything else would work, but I keep getting the same error message. Does anyone know what combination of amounts for N,I%,PV,FV,P/Y, and C/Y will give the result -.5585106809 for tvm_Pmt(N,I%,PV,FV,P/Y,C/Y) ??
I would remake the app, but remaking the program and making the app again and signing it and testing it is too much work. Also, I need administrative privileges to sign the app and I only managed to sign it when admin was still logged on.
Again, I need a combination of amounts for N,I%,PV,FV,P/Y, and C/Y for
tvm_Pmt(N,I%,PV,FV,P/Y,C/Y)=-.5585106809 to be true.

Re: Finance help

Weregoose 10 Sep 2011 00:36

Make sure you execute Pmt_End beforehand. If BEGIN is set, you'll get a different answer. But your number with those variables is correct.

Re: Finance help

Mr Dino 10 Sep 2011 10:23

Thanks. I've found something strange though. It works on my calculator (TI 83+) and I've also tried it on 2 84+ SE's. But when trying it on an emulator, both Wabbitemu and the TI 83 Flash Debugger, it results in -.5042553405. ??????

Last edited on 10 Sep 2011 15:26 by Mr Dino Show more

Re: Finance help

Weregoose 10 Sep 2011 13:23

That value suggests that FV has been changed to 0.

When FV=1, I get the correct output on Wabbitemu.