问题
填空题
已知数集M={x2，1}，则实数x的取值范围为______．
答案
∵数集M={x2，1}，
根据集合的元素的互异性知x2≠1，
∴x≠±1，
∴实数x的取值范围为{x|x∈R，且x≠±1}，
故答案为：{x|x∈R，且x≠±1}
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已知数集M={x2，1}，则实数x的取值范围为______．
∵数集M={x2，1}，
根据集合的元素的互异性知x2≠1，
∴x≠±1，
∴实数x的取值范围为{x|x∈R，且x≠±1}，
故答案为：{x|x∈R，且x≠±1}
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