Bonjour

résoudre les inéquations suivantes:

1) 2x-5/x+2 ≤ 0

2x - 5 = 0

2x = 5

x = 5/2

x + 2 # 0

x # -2

x.............|-inf.......-2........5/2.........+inf

2x - 5....|.....(-).........(-).....o....(+)..........

x + 2......|.....(-).....o...(+).........(+)..........

Ineq.......|.....(+)....||....(-)....o....(+).........

2) 3x+1/x-1 < 2

x - 1 # 0

x # 1

3x + 1 < 2(x - 1)

3x + 1 < 2x - 2

3x - 2x < -2 - 1

x < -3