lim x mendekati 0 1-cos4x / 2x^2
Matematika
britney3
Pertanyaan
lim x mendekati 0 1-cos4x / 2x^2
1 Jawaban
-
1. Jawaban arsetpopeye
Lim (1 - cos 4x)/(2x^2)
= Lim (2 sin^2 2x)/(2x^2)
= Lim 2/2 . (sin 2x)/x . (Sin 2x)/x
= 1 . 2 . 2
= 4