2.46: Definite integrals of rational and exponential functions

0606/22/M/J/20 — Question 7 · 9 marks

Giving your answer in its simplest form, find the exact value of
(a)
04105x+2dx\displaystyle\int_{0}^{4} \frac{10}{5x + 2}\,\mathrm{d}x,
[4]
(b)
0ln2(e4x+2)2dx\displaystyle\int_{0}^{\ln 2} (\mathrm{e}^{4x + 2})^{2}\,\mathrm{d}x.
[5]