Please tolong jawab soal no 18-19????
Jawaban:
limit subsitusi
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18). lim x → 2
= (x² – 5x + 3)
lim x → 2
= (2² – 5(2) + 3))
= (4 – 10 + 3)
= -3 (D)
19). f(x) = 3x + 1 dan g(x) = x² – 2x + 3
lim x → -2
= 2f(x) + 3g(x)
= 2(3x + 1) + 3(x² – 2x + 3)
= 6x + 2 + 3x² – 6x + 9
= 3x² + 11
lim x → -2
= 3(-2)² + 11
= 3(4) + 11
= 12 + 11
= 23