高三数学解答题要有思路与详解 谢谢老师
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/06/28 07:41:29
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解题思路: “联立方程组,用韦达定理”。 第一问可借助于数量积; 第二问借助于中点、高线,长度关系来刻画正三角形。
解题过程:
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最终答案:略
解题过程:
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最终答案:略