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职称英语
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
47
管理
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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