Re: HP15C LE calculator forensics? Message #14 Posted by Gerson W. Barbosa on 10 Sept 2011, 7:37 p.m., in response to message #6 by Thomas Klemm
Quote:
But there's no way to enter 355/226 into this calculator. The best you can do is to calculate that number which is 1.570796460. That's why we have to compare the result of tan(1.570796460).
 HP15C: 7,507,225.705
 Correct answer: 7,507,219.878
 Relative error: 7.7619 × 10^{7} instead of 1.33x10^{3}
You are right. It would not be fair to compare the calculators results with the exact result of tan(355/226).
correct 16digit answer, tan(1.570796460) = 7507219.878366671
calculator displayed result relative error
HP45 7.516790992E+06 1.27E03
HP29C, 32E, 15C, 41CX 7507225.705 7.76E07
HP20S, 32SII, 28S, 48G 7507219.87837 4.44E13
hp 33s, 35s 7507220.0689 2.54E08
HP25 7518796.992 1.54E03
wp34s 7507219.878366671 0.00E+00
Gerson.
Edited: 10 Sept 2011, 7:48 p.m.
