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1问题的出现已知x、y∈(0,+∞),且x+2y=1,求1-x+-1y的最小值.学生甲:∵χ＞0,y＞0
重视变式训练 激活思维能力——一类不等式问题的统一解法
【摘 要】
：
1问题的出现已知x、y∈(0,+∞),且x+2y=1,求1-x+-1y的最小值.学生甲:∵χ＞0,y＞0
【机 构】
：
江苏省张家港市教育局教研室215600
【出 处】
：
数学教学研究
【发表日期】
：
2004年5期
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