TI59 Diagnostic forensics

[rprosperi]

(07-27-2020 01:15 AM)johanw Wrote:  

(07-26-2020 06:47 PM)Pjwum Wrote:  Basically it calculates the error of some seemingly arbitrary functions:

\begin{equation}
error = pol(rec(5 < 30)) - \sqrt{896 + 4} + \frac{\pi^2-fp(\pi^2)}{3^2}-1
\end{equation}

Sorry about my lack of understanding, I assume the < is a separator between radius and angle, but what do f and p stand for here?

I was briefly puzzled too about that, but later realized it must be the fractional part function. If you examine the components in the formula, it's all about verifying things aren't rounding incorrectly, so PI^2 - fp(PI^2) should be 9.