Q.Pensi agk lamaf(x) = 5x + 5! – 6x × 7f(7) =…..?
f(7) = 5(7) + 5.4.3.2.1 – 6(7) × 7
f(7) = 35 + 120 – 42 × 7
f(7) = 35 + 120 – 294
f(7) = 155 – 294
f(7) = –139
Penjelasan dengan langkah-langkah:
f(x) = 5x + 5! – 6x × 7
f(7) = 5(7) + (5 × 4 × 3 × 2 × 1) – 6(7) × 7
f(7) = 35 + (20 × 6) – 42 × 7
f(7) = 35 + 120 – 42 × 7
f(7) = 35 + 120 – 294
f(7) = 155 – 294
f(7) = -139
