Hints: Follow Example $17\mathrm{.}2$ in P$.765$ of your textbook

Problem $2.$

If the input voltage in the circuit of Fig. $17\mathrm{.}24$ is

$v(t)=\frac{7}{3}+\frac{1}{{}^2}{\displaystyle \underset{n=1}{\overset{}{}}}(\frac{1}{n^2}cosnt-\frac{}{n}sinnt)V$

determine the response $i_o(t).$