已知R为全集,A={x丨log2(3-x)≤2},B={x丨5/x+2≥1}
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/08 14:15:51
已知R为全集,A={x丨log2(3-x)≤2},B={x丨5/x+2≥1}
求补给Cr(A∩B)
求补给Cr(A∩B)
![已知R为全集,A={x丨log2(3-x)≤2},B={x丨5/x+2≥1}](/uploads/image/z/17553791-47-1.jpg?t=%E5%B7%B2%E7%9F%A5R%E4%B8%BA%E5%85%A8%E9%9B%86%2CA%3D%7Bx%E4%B8%A8log2%283-x%29%E2%89%A42%7D%2CB%3D%7Bx%E4%B8%A85%2Fx%2B2%E2%89%A51%7D)
{x|-5
已知R为全集,A={x丨log2(3-x)≤2},B={x丨5/x+2≥1} ,求补集Cr(A∩B),
已知R为全集,A={x|log2(3-x)≤2},B={x|(13)
已知R为全集,A={x丨log1/2(3-x)≥-2},B={x丨5/x+2≥1} ,求补集CrA∩B
已知集合P=[1,3],函数f(x)=log2[x^2-(a-3)x+b].1)设全集U为R,若
已知全集U=R,集合CUA={x|log2[(x-1)(x-7)+9]>2},B={x|(x-5)/(x-3)>2},则
已知全集U=R A={x f(x)=根号(X-1)(X-2)} B={x log2(X-a)
已知全集为R,集合A={x|x^2-5x+6≥0},集合B={x||x
已知R为全集,A={x丨log1/2(3-x)≤2},B={x丨5/x+2≥1} ,求补集Cr(A∩B),
已知R为全集,A={x|log1/2(3-x)≥-2},B={x|3^-x²+x+6≥1},求(CRA)∩B
已知全集u=r,集合a={x|-3≤x<1},函数f(x)=log2(x+3)的定义域为B 求(1).a并B a交B (
已知集合A={x丨x^2-2x-8≤0},B={x丨x^2-(2m-3)x+m^2-3m≤0,m∈R},设全集为R,若A
已知全集U=R,集合A={x丨x〉3或x≤-2},集合B={x丨2m-1