Вправи: 648

648. Складіть із кроком 1 таблицю значень функції, заданої формулою

у = 3(1 – х²), –3 ≤ x ≤ 4.

x	–3	–2	–1	0	1	2	3	4
y(x)	–24	–9	0	3	0	–9	–24	–45

y(–3) = 3 (1 – (–3)²) – 3 • (1 – 9) – 3 • (–8) = –24;

y(–2) = 3 (1 – (–2)²) = 3 • (1 – 4) = 3 • (–3) = –9;

y(–1) – 3 (1 – (–1)²) = 3 • (1 – 1) = 0;

y(0) = 3 • (1 – 0) = 3; y(1) = 3 • (1 – 1²) = 0;

у(2) = 3 • (1 – 2²) = 3 • (1 – 4) = 3 • (–3) = –9;

y(3) = 3 • (1 – З²) = 3 (1 – 8) = 3 • (– 8) = –24;

y(4) = 3 • (1 – 4²) = 3 • (1 – 16) = 3 • (–15) = –45.