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Anugrahwati
Student XII IPA
Jika f(x) = cos? (2x + 3) = { cos (4x + 6) + maka f'(x) = A. 2 sin (2x + 3) cos (2x + 3) B. 4 sin (2x + 3) cos (2x + 3) C. -2 sin (4x + 6) D. 2 sin (4x + 6) E. 2 cos (4x + 6)
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Siti Alyanabila
Student XII IPA
f(x) = cos(2x + 3) f(x) = 2. cos (2x+3).(- sin(2x + 3)).2 = -2.2 sin(2x + 3) cos(2.x + 3) = -2 sin(4x+6)
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