Solution 30211: Computing Net Present Value (NPV), Modified Internal rate (MIRR), and Internal Rate of Return (IRR) Using a TI-Nspire™ Family Products.
How do I compute NPV, MIRR, and IRR using a TI-NSPIRE family handheld or software?Commands Syntax.
CF0 is the initial cash flow at time 0; it must be a real number.
CFList is a list of cash flow amounts after the initial cash flow CF0.
CFFreq is a list in which each element specifies the frequency of occurrence for a rouped (consecutive) cash flow amount, which is the corresponding element of CFList. The default is 1; if you enter values, they must be positive integers < 10,000.
The following examples will demonstrate how to compute NPV, MIRR, and IRR.
Initial cash flow is -100
Interest rate is 7%
What is the NPV, MIRR, and IRR?
1) Press [Home] and select Lists & Spreadsheets.
2) Press  [enter] [-9] [enter]  [enter] [Ctrl] .
3) Press [Tab] [k] [Tab] [l] [enter] [Tab].
4) Press  [enter]  [enter]  [enter]
5) Press [Home] and select Calculator
1) Press [menu] [8: Finance] [4: Cash Flows] [1: Net Present Value]
2) Press  [,] [-]    [,] [k] [,] [l] [Enter]
1) Press [menu] [8: Finance] [4: Cash Flows] [2: Internal Rate of Return]
2) Press [-]    [,] [k] [,] [l] [Enter]
1) Press [menu] [8: Finance] [4: Cash Flows] [3: Modified Internal Rate of Return]
2) Press [i] [r] [r] [(] [-]    [,] [k] [,] [l] [Right Arrow] [,]  [,] [-]    [,] [k] [,] [l] [Enter]
Please Note: You can alternatively copy the IRR result by pressing [Up Arrow] then [Enter] instead of computing the value within MIRR if you computed IRR before MIRR as listed in the image below.
Please see the TI-Nspire CX, TI-Nspire CX CAS, TI-Nspire and TI-Nspire CAS guidebooks for additional information.