nilai lim x->2 1-cos2(x-2) : x^2-4x+4 sama dengan

(1 - cos²(x - 2)) / (x² - 4x + 4)
= sin²(x - 2) / (x - 2)²
= 1

Lim (1 - cos 2(x - 2)) / (x^2 - 4x + 4)
= Lim (1 - (1 - 2 sin^2 (x - 2)) / (x - 2)(x - 2)
= Lim (2 sin (x - 2) sin (x - 2)) / (x - 2)(x - 2)
= Lim 2 . (sin (x - 2))/(x - 2) . (sin (x - 2))/(x - 2)
= 2 . 1 . 1
= 2