limit x mendekati 0 4x^2/1-cos2x

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Bab Limit
Matematika SMA Kelas XI

lim ((4x²) / (1 - cos 2x))
x→0
= lim ((4x²) / (1 - (1 - 2 sin² x)))
  x→0
= lim ((4x²) / (2 . sin² x )
  x→0
= 4/2
= 2