lim x mendekati 1 (x kuadrat - 1) / (3-akar x kuadrat + 8)

Lim      (x² - 1)/(3 - √(x² + 8))
x → 1

Jwb:
Gunakan dalil L'Hospital,,
(x² - 1)/(3 - √(x² + 8))
= 2x/(-2x/2√(x² + 8))
= -2√(x² + 8) -------->> (masukkan nilai "x → 1")
= -2√(1² + 8)
= -2√(1 + 8)
= -2√9
= -2.3
= -6