[SystemSafety] Fwd: De perfidiis calculatorum (pace Oscar Wilde)

[Olwen Morgan]

All,

Below are further, shocking results from tests of calculator numerical 
integration algorithms. All the listed devices were made to perform 
numerical integration with respect to x from 0 to 6 of the function: 
e^(x^3). I cribbed this stress test from some postings on an HP 
calculator forum. The results are:


Canon F789SGA 5.963938092e91

Casio fx-991ES PLUS5.963938092e91

Casio fx-991EX 5.963938092e91

Hewlett-Packard HP50g 5.963938092e91 (rounded to ten SF)

Sharp EL-W506 7.466216848e91  *** relative error > 25% ***

Sharp EL-W506T 7.466216848e91 "      "     "


Would anyone here feel at ease calculating the volume of a pressure 
vessel by numerical integration using either of the Sharp devices?


Ho, hum,

Olwen










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