Question about Texas Instruments TI-84 Plus Calculator

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Calculating out npv and irr

I need to calculate out nvp and irr (finance) and my TI-84 just gives me the "ERR:ARUMENT 1:Quit 2:Goto" when I've put in all the data and press enter. Can you give me the detailed runtrough for puncing in data for solving? Please? Im really struggling and can't seem to figure out what i do wrong. I use both the ( ) and [ ] when i type in....

Posted by ChrissaNor on

  • freddyb777 Feb 16, 2009

    I'm trying to understand all the mumbo-jumbo about how to get the IRR for a cash flow problem!

  • Cheah Pin Apr 29, 2013

    irr(initial outlay, {cash flows}, {frequencies of cash flows}) no need to enter interest rate as IRR is the computation of internal rate of return when NPV is zero.



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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})

Posted on Apr 30, 2009


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How to Calculate IRR?

To calculate IRR and NPVEnter the cash flows as follows, remembering the sign convention:
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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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