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八年级数学：求函数自变量取值范围，学生易错题，需要注意什么？
八年级数学：如何求函数自变量取值范围？需要注意哪些？
八年级数学函数图像与性质33/45
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App06:35八年级数学：如何求函数自变量取值范围？需要注意哪些？
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