It is known that a = {x-4 ＜ x ＜ 6}, B = {x 3a ＜ x ＜ a, a ∈ r}, 1. If a ∩ B = empty set, find the value range of real number a; 2. If a ∪ B = a, find the value range of real number a

It is known that a = {x-4 ＜ x ＜ 6}, B = {x 3a ＜ x ＜ a, a ∈ r}, 1. If a ∩ B = empty set, find the value range of real number a; 2. If a ∪ B = a, find the value range of real number a

1. If a ∩ B = an empty set, then there is 3a ≤ - 4 or a ≥ 6, and the solution is a ≤ - 3 / 4 or a ≥ 6
2. If a ∪ B = a, then 3A > - 4 and A-3 / 4 and a

Elden Ring Premiere

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