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1 = 0.9... is the consequence of purposely ambiguous and questionable notation. That's an old teachers' trick to make students talk and listen about mathematics
by astrobe_ 7y ago
1 = 0.9... is the consequence of purposely ambiguous and questionable notation. That's an old teachers' trick to make students talk and listen about mathematics.
- heinrichhartman 6y agoThis has nothing to do with notation. It's perfectly possible to define infinite sequences without using dots. In particular if they are constant. In the above case: a_i = 9 for i \in \IZ and i < 0 a_i = 0 for i \in \IZ and i >= 0 Where \IZ are the integers.