Question

Rezolvati urmatoarele inecuatii in multimea Z/N . Repede.

Answer 1

Z-N= -Z

d)x+2>0

x > -2

x={ -1 }

e)-3x-17<0

-3x <17 | *(-1)

x< -17/3

x={ -5 ; -4 ; -3 ; -2 ; -1 }

f)|-7|x+14≥0

7x≥-14

x≥-2

x={-2;-1}

g)-\sqrt{3} x-\sqrt{108} ≤0

-\sqrt{3} x≤\sqrt{3} *\sqrt{36} | : radical 3

-x ≤6

x≥-6

x={-6;-5;..;-1}

h)-8x+11>0 | *(-1)

8x<11

x<11/8

x=-Z

i) -2x+\sqrt{12} <0

-2x<-\sqrt{3} *\sqrt{4}

-2x<-\sqrt{3} *2 |:2

-x<-\sqrt{3} | *(-1)

x>\sqrt{x3}

x= ∅