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一般的,數軸上表示數a點的與原點的(距離)叫做數a的絕對值
絕對值的意思是:一個數距離原點的組織距離 通俗的就是說這個數的點和0之間差距多少組織,但必須是正的 比如:|-3|=3 |-5|=5 |6|=6
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