8. Fungsi f didefinisikan sebagai f(x)=x³-3x²+2x+1. Tentukan nilai fungsi f(x) untuk x = -2! Jawab:
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Penyelesaian
f(x) = x^3 - 3x^2 + 2x + 1
f(-2) = (-2)3 - 3(-2)2 + 2(-2) + 1
= -8 + 12 - 4 + 1
= 1
f(-2) = 1
Verified answer
Jawaban:
f(-2) = (-2)³-3(-2)² +2(-2)+1
= -8-12-4+1
= -23