§ 2. Функції

888. Функцію задано формулою y = x² + x + 1. Заповніть таблицю:

y(–3) = (–3)² + (–3) + 1 = 9 – 3 + 1 = 7.

y(–2) = (–2)² + (–2) + 1 = 4 – 2 + 1 = 3.

y(–1) = (–1)² + (–1) + 1 = 1.

y(0) = 0² + 0 + 1 = 1.

y(1) = 1² + 1 + 1 = 3.

y(2) = 2² + 2 + 1 = 7.

y(4) = 4² + 4 + 1 = 16 + 4 + 1 = 21.

y(7) = 7² + 7 + 1 = 49 + 7 + 1 = 57.