Question about Texas Instruments TI-83 Plus Calculator

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My finance application for npv is not working. It merely goes to the main screen and says npv without allowing me to enter into the application and enter data to solve for npv. Can anyone help?

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  • kakima May 11, 2010

    What happens when you enter after the "npv(" 6,-2000,{1000,-2500,0,5000,3000} followed by ENTER? (The - for negative numbers is the (-) key to the right of the decimal point, not the subtract key above the +.) Or can't you enter anything at all?

    You should get 2920.647961.

    The npv is one of the functions used for calculating cash flows. If you want the finance app, select TVM_Solver... from the Finance apps menu.

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Having gone over a month without a response, I assume this is no longer a problem.

Posted on Jun 01, 2010

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1 Answer

Where is the CFj key on the TI-84?


There is no key for that. If you want to use npv( net present value, you access it by pressing APPS>1:Finance>7:npv(
The function npv( requires a list for subsequent inflows. The name of the list where all subsequent inflows are stored must be given as argument of the function. That argument tells the functions where to find the inflows.
In the TI84Plus manual, the chapter 14: Applications treats the calculation of cash flows.

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Hi, I have a hp50g calc. I was wondering how i can install a formula library from a zip file onto my calc. but more importantly I was wondering if this calc has the functionality to calculate NPV(net...


Unzip it. Transfer it to a Secure Digital card, then plug the card in the SD-card slot. Use the File Manager/explorer and move the library to the Memory location you want.

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I am using the finance app on the TI 84 plus and followed an example on how to use it but the answer was different from the example. Do I need to reprogram the calculator? If so, how do I go about it?...


There is nothing to reprogram: The finance application is part of the OS and you cannot modify its working. Most likely you made some small mistake or other entering the terms of the calculation.
There may be some old values in the finance application variables. It might be a good idea to clear the registers before any new calculation.

Sep 20, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

Calc will not return a value im looking for when entering N,PV,FV


Having gone over a month without a response, I assume this is no longer a problem.

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How do i access the tvm solver


Hi,
Through the Finance Application. Press [APPS][1:Finance][1:TVM-Solver] [ENTER].

Hope you find it.

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2 Answers

Having used finance menu(2nd,var-link,2nd,F2,npv) i get a domain error trying to solve a new problem?? any solutions?


You get domain errors because you are inputting a illegal condition. For example ans(100) is a illegal because the range of numbers inside the brackets can only be 1 through 99. Your using:

npv(InterestRate,CFO,CFList[CFFreq])
irr(CFO,CFList[CFFreq])

I don't like how the manual show the set up of these functions. They should have placed commas between the items and used brackets like they are when entered into the calculator.

CFO=5000
CFList={6000,-8000,2000,-3000}
CFFreq={2,2,2,1} integers must be positive and <10000
Notice the number of placeholders or items in the CFList is 4 and is the same numbers of frequencies in CFFreq which is 4 too.

b5d57f9.jpg
You have to have the same number of items in the list as you have number of items of frequencies. In this case 4. I hope my examples will help you solve the problem of domain error.





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2 Answers

Calculating out npv and irr


Are you using the finance app?

[APPS] [1] [ENTER]

For NPV, choose "7:npv("
Then use:
npv(interest rate, cost {cash flows}, {frequencies of cash flows})

For IRR, choose "8:irr("
Then use:
irr(interest rate, cost {cash flows}, {frequencies of cash flows})

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1 Answer

Calculating out npv and irr


Use the "FINANCE" app:

[APPS] [1] [ENTER]

for npv: select "7:NPV"
now you should get "npv(" on your screen.
use: npv(interest rate, cost {cash flows}, {frequencies of cash flows})


for irr: select "8: irr"
"irr(" will come up.
use: irr(interest rate, cost {cash flows}, {frequencies of cash flows})

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1 Answer

Texas Instrument BA2 NPV problem


After you enter the value, you have to press enter so the value is saved for the calculation.

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