Lim x mendekati 1 sin (x-1) per x kuadrat – 1

Lim x→1, sin(x-1) / (x²-1)
lim x→1, sin(x-1) / (x-1)(x+1)
lim x→1, 1/(x+1)
lim x→1, 1/(1+1)
lim x→1, ½