Sine and cosine derivatives
Sine and cosine derivatives
5 marks
TGM Original
Angles are in radians. Given y=- 3 sin(x) + sin(3 x), find dydx. Hence find its value at x=0.
Solution:
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Answer:\(\dfrac{\mathrm{d}y}{\mathrm{d}x}=- 3 \cos{\left(x \right)} + 3 \cos{\left(3 x \right)}\); at \(x=0\), \(0\).
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