10.线段AB=10,动点P满足PA-PB=8,则PA的最小值是——————
10.线段AB＝10,动点P满足PA－PB＝8,则PA的最小值是——————
人气：294 ℃ 时间：2020-05-19 04:48:14
解答
PA-PB=8
PA+PB＞10
∴2PA=18
PA=9
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