Jawab:
f(x) = 3 sin(2x) cos(2x)
Identitas trigonometri, sin(2x) = 2 sin(x) cos(x), maka 2 sin(2x) cos(2x) = sin(4x)
Sehingga f(x) = 3/2 sin(4x)
Turunan f(x)
f'(x) = 3/2 (4) cos(4x) = 6 cos 4x
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Jawab:
f(x) = 3 sin(2x) cos(2x)
Identitas trigonometri, sin(2x) = 2 sin(x) cos(x), maka 2 sin(2x) cos(2x) = sin(4x)
Sehingga f(x) = 3/2 sin(4x)
Turunan f(x)
f'(x) = 3/2 (4) cos(4x) = 6 cos 4x