TVM formula error in programming manual?

[Thomas Klemm]

(10-30-2023 09:36 AM)dm319 Wrote:  Am I right, or is my algebra wrong?

I think you are right.

Additionally, there appears to be a typo in the comment of the program "TVM" in the HP-42S Owner's Manual on page 193 related to the following code:

Code:

15 FC? 00
16 CLX
17 +

Comment:

Quote:If flag 00 is clear (End mode), calculates (i + 0).
If flag 00 is set (Begin mode), calculates (i + 1).

Should be:

Quote:If flag 00 is clear (End mode), calculates (1 + 0).
If flag 00 is set (Begin mode), calculates (1 + i).