$9\mathrm{.}7$ If $v_c(0)=-2V$ and $i(0)=4A$ in the circuit of given figure, find the power absorbed by the capacitor at $t$ equal to $($a$)0^{+},($b$)0\mathrm{.}2$ s $,$ and $($c$)0\mathrm{.}4$ s $.$

Figure P$9.7$