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数学
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若集合A={(x,y)|4x+y=6},B={(x,y)|3x+2y=7},则集合A∩B=
人气:426 ℃ 时间:2020-04-09 11:15:04
解答
AnB
4X十 Y=6.(1)
3X 十2Y=7.(2)
(1)*2-(2),得
5X=5
X=1
代入(1),得
4 Y=6
Y=2
所以
AnB=={(X,Y)|X=1,Y=2}
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