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p p .
1 = 2 . . + 1/2 . . + 1/2 . .
1 = 2 . . + 1/4 . . p p
1 = 2 . . + 1 + 2
1 = 2 + 2
1 = 2
1 = 1 + 1 + 2
p p :
1 = 1 . . p p + 2 . .
1 = 1 ,
2-3 ( ) .
http://www.stranamam.ru/post/4907646/
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