Derivatives of the Trigonometric Functions: Quiz

Problem 2

y = (sin(x) cos(2x))³

1. 3(cos(x) sin(2x))²
2. –3(sin(x) cos(2x))²(cos(x) sin(2x))
3. 3(sin(x) cos(2x))²(–2 sin(x)sin(2x) + cos(x)cos(2x))
4. 3(cos(x) sin(2x))²(sin(3x) + cos(3x))

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