已知A={m/㎡一3m一10≤0}求x的取值范围 (1)若B含于A,B={m/x+1≤m≤2x-1,x为常数} (2)

已知A={m/㎡一3m一10≤0}求x的取值范围 (1)若B含于A,B={m/x+1≤m≤2x-1,x为常数} (2)
已知A={m/㎡一3m一10≤0}求x的取值范围
(1)若B含于A,B={m/x+1≤m≤2x-1,x为常数}
(2)若A含于B,B={m/x-6≤m≤2x-1,x为常数}
(3)若A=B,B={m/x-6≤m≤2x-1,x为常数}