DB48X: HP48-like RPL implementation for DM42

[c3d]

(11-04-2024 09:36 PM)Dashier Wrote:  There's a Facebook thread regarding a test of calculator accuracy based on an exam question that results in:

Code:

 (SQRT(2)-1)^10 = 3363-2378*SQRT(2)

Can you share the link to the Facebook thread? I could not find it with a quick search. Thanks.

Quote:There are a number of comments regarding the accuracy of various calculators.

I elected to set the DB50X to 2000 digits precision and test it. The difference between the LHS and RHS was 2.15651x10^-1997

Nice job Christophe!

Post script: doing the LHS as a series of multiplications gives virtually the same results. Setting the precision to 6400 digits, yields of a difference of: 9.59198x10^-6397