2. 职称英语
  3. Quantity A: the shortest distance between the line x+y=3 and 2x+2y=4Quantity B:

Quantity A: the shortest distance between the line x+y=3 and 2x+2y=4Quantity B:

游客2024-01-12  60
问题 Quantity A: the shortest distance between the line x+y=3 and 2x+2y=4
Quantity B: 1
选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案 B
解析 直线2x+2y=4相当于x+y=2，两条直线x+y=3和x+y=2可以表示成下图所示，它们之间的最短距离当然小于1，选择B。
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