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1/2×1/2=1/4 1/2×1/4=1/8 1/2×1/8=1/16 1/2×1/16=1/32 1/2×1/32=1/64
[1,2)∪(2,+∞) (1,+∞) [1,2) [1,+∞)
(-2,-1) (1,2) (-3,-2) (2,3)
1/2×1/2=1/4 1/2×1/4=1/8 1/2×1/8=1/16 1/2×1/16=1/32 1/2×1/32=1/64
64的平方根是8 ﹣1的平方根是±1 ﹣8是64的平方根 (﹣1)2没有平方根
)48-1; ( )264-1; ( )26-1; ( )23-1
1/2×1/2=1/4 1/2×1/4=1/8 1/2×1/8=1/16 1/2×1/16=1/32 1/2×1/32=1/64
1:2:3:5 1:2:4:8 1:4:8:16 1:4:16:64