2025年教学资料:2.1不等式的基本性质(分层作业)(解析版)
2.1不等式的基本性质分层作业1.判断正误(对的打“√”,错的打“×”)(1)不等式x≥2的含义是指x不小于2.( √ )(2)若x2=0,则x≥0.( √ )(3)若x-1≤0,则x<1.( × )(4)两个实数a,b之间,有且只有a>b,a=b,a<b三种关系中的一种.( √ )解 (1)不等式x≥2表示x>2或x=2,即x不小于2.(2)若x2=0,则x=0,所以x≥0成立.(3)若x-1≤0,则x<1或者x=1,即x≤1.(4)任意两数之间,有且只有a>b,a=b,a<b三种关系中的一种,没有其他大小关系.2.大桥桥头立着的“限重40吨”的警示牌,是提示司机要安全通过该桥,应使车和货物...
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