F(x)= 2 cos³ (2x²+1)
Matematika
cicinurhayati80
Pertanyaan
F(x)= 2 cos³ (2x²+1)
1 Jawaban
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1. Jawaban DimasRaka
f(x) = 2cos³(2x² + 1)
f'(x) = 3 × 2cos²(2x² + 1) × (-sin(2x² + 1)) × 4x
= -12x × 2cos(2x² + 1)sin(2x² + 1) × cos(2x² + 1)
= -12x × sin2(2x² + 1) × cos(2x² + 1)
= -12x × sin(4x² + 2) × cos(2x² + 1)