Looking for TVM contributions

[dm319]

(06-09-2024 02:04 AM)robve Wrote:  - Rob

Thank you Rob! This is great, and two interesting non-HP calculators too.

Very interesting that the TI returns for problems 5 and 6, much like the solver in the TI-83+, also choosing to return the same two roots (first one 14.4, second one the negative root). Which suggests to me they use a similar solver_for_i algorithm, but the precision is quite different between them. Overall the TI does very well, putting it squarely better than the HP-12c. Overall I put it at a similar level to the HP-10bII+ (due to adding new problems I don't have full data on the HP-10bII+) and just below the HP-12c platinum, but with quite different pros and cons.

The Sharp does especially badly on problem 3, which suggests it hasn't optimised the (1+i)^N - an issue on the HP-80 and HP-70. It conveniently finds 0 for problem 4, but like other ones that do this (like the BWK business and HP-92) it also finds 0 for problem 7 unfortunately. Problem 9 and 10 showed a good result with 9, but not the 'begin' counterpart 10. I had this issue with a particular formula on the DM42. It doesn't fair so well on your problem 11 - putting it above the HP-80 and 70 only. Overall I have put it above the HP-22/27, below the HP-37/38, and just below the Victor (though more data needed on the Victor).

I will update the results with these two.