Pembahasan:
lim x² – 2x – 3 = lim (x – 3)(x + 1)
x→3 2x – 6 x→3 2(x – 3)
= 3 + 1
2
= 2
Atau gunakan dalil L’Hospital
lim x² – 2x – 3 = lim 2x – 2
x→3 2x – 6 x→3 2
= 3.3 – 2
2
= 2
Kabar Masyarakat, Gaya Santai
lim x² – 2x – 3 = lim (x – 3)(x + 1)