Question

Ajutor va rog e urgent!!

Answer 1

g.  x < 0 dar x∈R <=> x∈(-∞,0) .

h.  x+1 > 1 <=> x > 0 dar x∈R <=> x∈(0,∞) .

i.  x²-1 > 1 <=> x² > 0 dar x∈R <=> x∈(0,∞) .

j.  3-x > 0 <=> x < 3 si x > 1 <=> 1 < x < 3 dar x∈R => x∈(1,3) .