3)x和y是不是在数轴原点的两边? 1. the distance from x to zero is equal to the distance from y to 1 2. the sum of the distance from x to zero and the distance from y to 1 is less than 1 【讨论】
3)x和y是不是在数轴原点的两边? 1. the distance from x to zero is equal to the distance from y to 1 2. the sum of the distance from x to zero and the distance from y to 1 is less than 1 【讨论】