標題: [估估下] X=？ [打印本頁]

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作者: doctor.n    時間: 2008-9-19 11:12 PM     標題: X=？

5.39.217.76, P7 M% ]" G4 L" |: R
5.39.217.76! M& [  D0 D' f* s: u( W, {# |
答案：
# w. G2 r0 _% m$ s1 [+ E5.39.217.76兩邊各平方就是tvb now,tvbnow,bttvb4 L: v% Q6 X- s

# D1 b4 n' J+ h2 N5.39.217.76所以X=2

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