Limit -x2/1-cosx x→0
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limit 0/0
L’Hopital
turunkan pembilang dan penyebutnya
lim x→0 -x² / (1 – cos x)
= lim x→0 -2x/(0 – (-sin x))
= -2 lim x→0 x/sin x
= -2 . 1
= -2