Recurring Decimal Notation
Date: 05/12/2003 at 13:10:30 From: Thomas.Kenning Subject: Infinite geometric series Nb. the dots represent that the number with a dot on the top means it has repetition Sample: .. 4.32 = 4.323232323232 . 0.3 = 0.333333333 The question is: . . 0.321 = ? For the last question there was no dot on top of the 2, only on top of the 3 and the 1.
Date: 05/12/2003 at 15:02:38 From: Doctor Peterson Subject: Re: Infinite geometric series Hi, Thomas. In America, the usual notation for a repeating decimal is to put a bar (vinculum) over the entire repeating portion: ___ 0.1234 = 0.1234234234... In some parts of the world (the British part?), a dot is placed over the FIRST and LAST digits in the repetend: . . 0.1234 = 0.1234234234... It is not just the 2 and the 4 that repeat, but the entire string "234" between them. If you have any further questions, feel free to write back. - Doctor Peterson, The Math Forum http://mathforum.org/dr.math/
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