$.8$ Find the Thevenin equivalent at terminals $a-b$ of the circuit in Fig. $10\mathrm{.}24.$

rigure $10\mathrm{.}24$

For Practice Prob. $10\mathrm{.}8.$

Answer: $Z_{Th}=12\mathrm{.}4-j3\mathrm{.}2,V_{Th}=\frac{47\mathrm{.}42}{{?}_{-}}51\mathrm{.}57V.$