Răspuns:
Explicație pas cu pas:
y + √5 - {2,8(3)} - [√5-8] = {5/3} + {7,0(6)+3+√5}
{5/3} + {7,0(6)+3+√5} = 0,(6) + {10,0(6) + 2,236} =
= 0,(6) + {12,302(6)} = 0,(6) + 0,302(6) = 1,002(5)
y + √5 - {2,8(3)} - [√5-8] ≈ y + 2,236 - 0,8(3) + 0,236 =
= y + 2 - 0,8(3) = y + 2 - (83-8)/90 = y + 2 - 5/6 = y + 7/6 =
= y + 1,1(6)
=> y + 1,1(6) = 1,002(5) =>
y = 1,002(5) - 1,1(6) = (10025-1002)/9000 - (116-11)/90 =
= 9023/9000 - 10500/9000 = -1477/9000 => y = -0,164(1)
{y} = 0,835(8) ; [y] = -1 ; [6y] = [-0,984(6)] = -1
