Product of exponential and trigonometric functions
Product of exponential and trigonometric functions
Secondary 4
TGM Original Questions
Differentiate \(y=\mathrm{e}^{3x}\cos 2x\).
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Answer:\(\dfrac{\mathrm{d}y}{\mathrm{d}x}=e^{3x}(3\cos 2x-2\sin 2x)\).
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