0606 P11 - Nov 2025 - Q7 - 7 marks
7097
(a) Differentiate \(\dfrac{\sin x+\cos x}{\mathrm{e}^{1-3x}}\) with respect to \(x\).
(b) Find \(\displaystyle\int(1+\tan^2 3x)\,\mathrm{d}x\).
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