0606 P11 - Jun 2023 - Q10 - 7 marks
7662
Given that
\(y=(3x+1)^2\ln(3x+1),\)
(a) find \(\frac{\mathrm dy}{\mathrm dx}\),
(b) hence find \(\displaystyle \int (3x+1)\ln(3x+1)\,\mathrm dx\).
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