Fungsi turunan 1. Y = cos (3x³-2x²) 2. Y = 3 sin (4x + 5)

1. y = cos (3x^3 - 2x^2)
y' = -sin (3x^3 - 2x^2) (9x^2-4x)
= (4x-9x^2) sin (3x^3 - 2x^2)

2. y = 3 sin (4x + 5)
y' = 3 cos (4x + 5) (4)
= 12 cos (4x + 5)

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