mx-m > 3x+2
(m-3)x > m+2
(i) 当 m-3 > 0 时 ,m > 3
x > (m+2)/(m-3)
x 一定大於 0,所以 m 无解
(i) 当 m-3 < 0 时 ,m < 3
x < (m+2)/(m-3)
m = 2 时,x < -4
所以 m = 2
mx-m > 3x+2
(m-3)x > m+2
(i) 当 m-3 > 0 时 ,m > 3
x > (m+2)/(m-3)
x 一定大於 0,所以 m 无解
(i) 当 m-3 < 0 时 ,m < 3
x < (m+2)/(m-3)
m = 2 时,x < -4
所以 m = 2