Got my calculator to lie
I was under the impression that calculators are supposed to store enough hidden digits so that the digits on the display are accurate. My HP15C evaluates this:
1 / [1 - (1000000/1000001)^(1/37)]
as 37,037,037.04 when it should be 37,000,019. Excel and the windows calculator get it right.
What policy will guarantee that all digits are significant?
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