Casio fx85GTPLUS 40 plus digit accuracy

05132023, 07:18 PM
Post: #1




Casio fx85GTPLUS 40 plus digit accuracy
Casio fx85GTPLUS 40 plus digit accuracy
was using my Casio fx GT Plus in the shed the other day an was shocked to see what my calculation had yielded, an over 40 digit answer when I pressed the StoD Button, see pictures attached. And I don't think it is the fumes in the shed 

05142023, 07:35 AM
(This post was last modified: 05142023 07:38 AM by EdS2.)
Post: #2




RE: Casio fx85GTPLUS 40 plus digit accuracy
Ah  see that dot over the final digit? That shows you're in 'recurring decimal mode'  and indeed, 220/381 repeats over 42 digits.
Neat though! Edit: you might be able to get to 47 digits, maybe 48, but probably not 50, with an appropriate calculation. See the manual. 

05142023, 05:30 PM
Post: #3




RE: Casio fx85GTPLUS 40 plus digit accuracy
(05142023 07:35 AM)EdS2 Wrote: Ah  see that dot over the final digit? That shows you're in 'recurring decimal mode'  and indeed, 220/381 repeats over 42 digits. I'm sure there is a nice challenge here to display the maximum possible number of digits! fx83GT PLUS fx85GT PLUS User's Guide Wrote:Conditions for Displaying a Calculation Result as a Recurring Decimal — Ian Abbott 

05162023, 12:32 PM
(This post was last modified: 05172023 12:34 PM by EdS2.)
Post: #4




RE: Casio fx85GTPLUS 40 plus digit accuracy
Yes, a nice idea for a minichallenge! Perhaps something like
Quote:Find a fraction with a specific length of repeating decimal digits. You have a maximum total of 9 digits for both numerator and denominator. The aim is to get a 99 byte representation, or the largest that doesn't exceed 99, where each digit of the answer, and the decimal point, and each digit of the recurring part, each cost one byte. Edit: found an answer by trial and error: gelbaruhaqerqnaqavargrraguf (rot13) 

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