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Little explorations with HP calculators (no Prime)
03-24-2017, 10:54 PM (This post was last modified: 03-24-2017 11:07 PM by Dieter.)
Post: #25
RE: Little explorations with the HP calculators
(03-24-2017 10:04 PM)pier4r Wrote:  How do you solve this using a calculator to compute the number?

I think a calculator is the very last thing required here.

(03-24-2017 10:04 PM)pier4r Wrote:  I solved it translating it in a formula after a bit of thinkering, and I got a number that I may write as "x + 0.343 + O(0.343)" if I'm not mistaken. I used the numeric solver on the hp 50g as helper.

Numeric solver? The radius can be determined with a simple closed form solution. Take a look at the diagonal through B, O and D which is 6√2 units long.
So 6√2 = 2√2 + r + r√2. Which directly leads to r = 4 / (1 + 1/√2) = 2,343...

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RE: Little explorations with the HP calculators - Dieter - 03-24-2017 10:54 PM

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