Euler Identity in Home

[Matt Agajanian]

I'm wondering if this thread's points are making a calculator's usage moot because they're varied in their results and inherent limited precision.

I'm just throwing this out there but, are you saying the calculator has become a moot tool?

Granted, no calculator's has a Cray set of processors but, (forgive me), neither does the WP-34S. On that note, as illustrated in earlier posts, even MS Excel spurts out inaccuracies. By my own tests, in DocumentsToGo (iPhone version), both sin(pi)) and tan(pi()) result in -1.22465E-16 but, cos(pi()) returns -1. By the way, speaking of iPhone apps, the WP-34S app (v1.5) returns -2.38462643383e-16 for both sin(π) and tan(π), where cos(π) returns -1.