HP 17BIIPLUS Owner's Manual page 104

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Example: An Investment with Grouped Cash Flows. You are
considering an investment that requires a cash outlay of $9,000, with
the promise of monthly cash flows as shown. Calculate IRR%. Also find
NPV and NFV at an annual interest rate of 9%.
$ _ 9,000
Since some of these cash flows are grouped (consecutive and equal),
the #TIMES prompting must be on so you can specify a number other
than 1.
Group Number
Initial
1
2
3
4
Keys: Display:
" "
r
"
@c
104 7: Cash Flow Calculations
Calculates new NPV.
Amount Number of Times
－9,000
500
1,000
0
1,500
Description:
Current cash-flow list and
CFLO menu.
Clears current list. #TIMES
0
－
3
4
1
3