help me,

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help me,
help me,
 

help me,
第一步3下写-1,4下写3,因此3＜x＜4,第二步,3.3下面-0.01,3.4下面0.36.因此3.3＜x﹤3.4 ﹙2﹚﹚矩形铁片整数部分为3,十分位为3,

这初几的啊、、/?

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