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我们已经知道,数α的绝对值取值如下: 从数轴上看,一个数的绝对值,就是表示这个数的点到原点的距离.这就是绝对值的几何意义.由绝对值的几何意义,可以推出下面几个重要结论:
We already know that the absolute value of the number α is as follows: From the axis, the absolute value of a number is the distance from the point representing the number to the origin. This is the geometric meaning of the absolute value. From the geometric meaning of the absolute value, There are several important conclusions that can be made: