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Kelas 11 MatematikaBab Limit
lim (1 - cos 4x)/(x tan 2x)
x→0
= lim (1 - (1 - 2 sin² 2x)) / (x tan 2x)
x→0
= (2 sin 2x/tan 2x) . (sin 2x)/x
= 2 . 2
= 4