(1)
p p, p 200 p 1-2 . : . 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 ,