Question

exercitiul 4 , va rog frumos!

Answer 1

a)
-x+5≤0
-x≤-5
x≥5
x∈{5,6,.....}
b)
-3x+5<0
-3x<-5
x>5/3
x>1,(6)
x∈Z => x∈{2,3,...}
c)
-x-4<0
-x<4
x>-4
x∈{-3,-2,-1,0....}
d)
-x+10>0
-x>-10
x<10
x∈{.....,7,8,9}
e)
-x+3≥0
-x≥-3
x≤3
x∈{.....,0,1,2,3}
f)
-6x-2≥0
-6x≥2
6x≤-2
x≤-2/6
x≤-1/3
x≤-0.(3)
x∈{........-3,-2,-,}
Si celelalte merg la fel.
PS: Cum am discutat pe privat iti las aici si pb 1 de la sub3 de la varianta aceea de teza.