CASTI-89 TITANIUM (FINANCE APP) · CALC89
irr(
Returns the internal rate of return of a series of cash flows, the rate at which the net present value is zero.
Syntax
irr(CF0, CFList[, CFFreq])
- Group
- Finance
- Arguments
- Takes the initial cash flow, the list of following cash flows and an optional list of how often each one occurs.
- Availability
- Pro feature in Calc89
- Menu path
- APPS ▸ Finance ▸ CALC ▸ irr(
- Origin
- On the TI-89 Titanium this command comes with the preinstalled Finance app
Example
| Input | Result |
|---|---|
| irr(5000,{6000,-8000,2000,-3000},{2,2,2,1}) | −4.64483671742 |
Typing irr(5000,{6000,-8000,2000,-3000},{2,2,2,1}) on the home screen and pressing ENTER returns −4.64483671742.
Keystrokes on the TI-89 Titanium
APPS98
The same key sequence inserts irr( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- mirr(Returns the modified internal rate of return, which uses separate finance and reinvestment rates.
- nom(Converts an effective annual interest rate into the nominal annual rate.
- npv(Returns the net present value of a series of cash flows at a given interest rate.
- tvmFV(Time value of money: returns the future value of a loan or savings plan.
- tvmI(Time value of money: returns the annual interest rate in percent.
- tvmN(Time value of money: returns the number of payment periods.
- tvmPmt(Time value of money: returns the payment per period, for example a monthly loan payment.
- tvmPV(Time value of money: returns the present value of a loan or savings plan.