A=R,B={x|x大于0},f:x→y=|x|是从集合A到集合B的函数.集合A和集合B的元素符号都是x,不是y= =那为什么对应关系是x→y啊?还有一个问题= =f:x→y=|x|该怎么理解啊。是f:"x"→"y=|x|"还是f:“x→y”=“|x|”
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/10 19:20:41
![A=R,B={x|x大于0},f:x→y=|x|是从集合A到集合B的函数.集合A和集合B的元素符号都是x,不是y= =那为什么对应关系是x→y啊?还有一个问题= =f:x→y=|x|该怎么理解啊。是f:](/uploads/image/z/5306396-68-6.jpg?t=A%3DR%2CB%3D%7Bx%7Cx%E5%A4%A7%E4%BA%8E0%7D%2Cf%3Ax%E2%86%92y%3D%7Cx%7C%E6%98%AF%E4%BB%8E%E9%9B%86%E5%90%88A%E5%88%B0%E9%9B%86%E5%90%88B%E7%9A%84%E5%87%BD%E6%95%B0.%E9%9B%86%E5%90%88A%E5%92%8C%E9%9B%86%E5%90%88B%E7%9A%84%E5%85%83%E7%B4%A0%E7%AC%A6%E5%8F%B7%E9%83%BD%E6%98%AFx%2C%E4%B8%8D%E6%98%AFy%3D+%3D%E9%82%A3%E4%B8%BA%E4%BB%80%E4%B9%88%E5%AF%B9%E5%BA%94%E5%85%B3%E7%B3%BB%E6%98%AFx%E2%86%92y%E5%95%8A%3F%E8%BF%98%E6%9C%89%E4%B8%80%E4%B8%AA%E9%97%AE%E9%A2%98%3D+%3Df%3Ax%E2%86%92y%3D%7Cx%7C%E8%AF%A5%E6%80%8E%E4%B9%88%E7%90%86%E8%A7%A3%E5%95%8A%E3%80%82%E6%98%AFf%3A%22x%22%E2%86%92%22y%3D%7Cx%7C%22%E8%BF%98%E6%98%AFf%3A%E2%80%9Cx%E2%86%92y%E2%80%9D%3D%E2%80%9C%7Cx%7C%E2%80%9D)
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