Matematika

Pertanyaan

tolong plis....tolong
tolong plis....tolong

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  • Lim (sin 3x - sin 7x)/(4x cos 2x)
    = Lim 1/(cos 2x) . (sin 3x - sin 7x)/4x
    = Lim 1/(cos 2x) . ((sin 3x)/4x - (sin 7x)/4x)
    = 1/(cos 2.0) . (3/4 - 7/4)
    = 1/(cos 0) . -4/4
    = 1/1 . -1
    = -1

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