HP 12C Instruction Manual page 6

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HP 12C Internal Rate of Return
Example 4: Update the amount of CF
Solution 1: Type in the correct amount and store it in R
9500 Þ ?2 fL
Solution 2: Set n register to (j-1), type in the correct amount, press gK, then restore n prior to compute IRR:
1n 9500 Þ gK 6n fL
Answer: The investment is still attractive based on revised IRR of 9.42%.
To modify a wrongly entered Nj, it is necessary to change the value stored in the register n.
Example 5: Now change both N
$ 7,000.00
CF
1
$-130,000.00
CF
0
Solution: For each correction, set n to match j, type in the correct N
its original value and press fL.
3n 2 ga 4n 2 ga 6 n fL
Answer: The newly computed IRR is 8.77%.
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for $-9,500.00 and compute the new IRR after this change.
2
and N to 2 and calculate the IRR again. The cash flow diagram now looks like this:
3 4
$ 20,000.00
CF
2 consecutive occurrences
N
3
$-9,500.00
CF
2
:
2
3
2 consecutive occurrences
N
4
and press ga. After all corrections, set n to
j
- 6 -
Figure 15
Figure 16
$ 178,500.00
CF
$ 12,000.00
CF
4
$-8,000.00
CF
5
Figure 17
Figure 18
HP 12C Internal Rate of Return - Version 1.0
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