Question

Aflati suma si produsul elementelor multimii A= { x ∈ Z/ -4 mai mare sau egal x mai mare sau egal ca 2 } va rog

Answer 1

A={-4,-3,-2,-1,0,1,2}
s=-4+(-3)+(-2)+(-1)+0+1+2
s=-10+1+2
s=-7
p=-4x(-3)x(-2)x(-1)x0x1x2
p=0

Answer 2

-4≤x≤2⇒x∈Z⇒x∈[-4,-3,-2,-1,0,1,2];
⇒A=[-4,-3,-2,-1,0,1,2];
⇒S=[-4]+[-3]+[-2]+[-1]+0+1+2
⇒S=[-10]+0+1+2
⇒S=[-7]⇒suma elementelor multimii;
⇒P=0⇒produsul elementelor multimii unde apare si numarul 0.