设集合A={x‖x^2-5X+6=O},B={X‖x^2-(2a+1)x+a^2+a=0,},若B含于A,
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 00:50:01
![设集合A={x‖x^2-5X+6=O},B={X‖x^2-(2a+1)x+a^2+a=0,},若B含于A,](/uploads/image/z/3985073-17-3.jpg?t=%E8%AE%BE%E9%9B%86%E5%90%88A%3D%7Bx%E2%80%96x%5E2-5X%2B6%3DO%7D%2CB%3D%7BX%E2%80%96x%5E2-%282a%2B1%29x%2Ba%5E2%2Ba%3D0%2C%7D%2C%E8%8B%A5B%E5%90%AB%E4%BA%8EA%2C)
设集合A={x‖x^2-5X+6=O},B={X‖x^2-(2a+1)x+a^2+a=0,},若B含于A,
设集合A={x‖x^2-5X+6=O},B={X‖x^2-(2a+1)x+a^2+a=0,},若B含于A,
设集合A={x‖x^2-5X+6=O},B={X‖x^2-(2a+1)x+a^2+a=0,},若B含于A,
A={2 3} 分别将2 3代入B X=2时 a=1(舍去) 或者a=2 X=3时 a=2或者3 a=3(舍去)
所以a=2