Accuracy?
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06-18-2021, 03:26 PM
Post: #2
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RE: Accuracy?
Each operation, rounded to 12 digits, is correct.
let fl(x) = rounded-12-digits of x √(3/7) → fl(√(fl(3/7))) = fl(√(0.428571428571)) = 0.654653670708 √(3)/√(7) →fl(fl(√3) / fl(√7)) = fl(1.73205080757 / 2.64575131106) = 0.654653670710 This is the history of why HP did this way: An interview with WILLIAM M. KAHAN, page 145/146 Quote:TI had this advertisement in the papers. It was a full-page advertisement. It said, “Type in your telephone number. Now,” they said, “Take the logarithm.” The logarithm turns out to be a number form ten-point-something, or nine-pointsomething, actually. “Now hit the exponential key. Do you get your phone number back? You do on our calculator.” |
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Messages In This Thread |
RE: Accuracy? - Albert Chan - 06-18-2021 03:26 PM
RE: Accuracy? - Valentin Albillo - 06-18-2021, 04:04 PM
RE: Accuracy? - HansB - 06-18-2021, 05:01 PM
RE: Accuracy? - rampo - 06-18-2021, 05:16 PM
RE: Accuracy? - John Keith - 06-18-2021, 09:51 PM
RE: Accuracy? - Steve Simpkin - 06-18-2021, 06:40 PM
RE: Accuracy? - rprosperi - 06-18-2021, 10:02 PM
RE: Accuracy? - Valentin Albillo - 06-19-2021, 02:47 AM
RE: Accuracy? - rampo - 06-18-2021, 05:13 PM
RE: Accuracy? - Mike Elzinga - 06-19-2021, 03:07 PM
RE: Accuracy? - Mike Elzinga - 06-19-2021, 05:46 PM
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