If the corresponding points of 2m, m and 1-m on the number axis are arranged from left to right, then the value range of M is the same
2m<m<1-m
2m-m<0
m<0
m<1-m
2m<1
m<1/2
∴m<0
It is known that M = {X / X1}. N = {X / 2x + a
It is known that x = - A / 2
-a/2≤-2
The solution is a ≥ 4
right key
The known set M = {X / X1}, n = {X / 2x + a}
a4
2x+a