$4\mathrm{.}12$ For the circuit shown in Fig. P$4\mathrm{.}12,$ suppose that the voltage across the capacitor is

$i_C(t)i_R(t)i_s(t)$ all previous answers are wrong so don't use them or I will give you a thumbs down and report you the answer is

$4\mathrm{.}12($a$)0$ for for for $0t<mi></mi>$

$(c)0$ for $-$ for for $0t<mi></mi>$

$(b)0$ for $-$ for $0t<mi></mi>$

$(c)0$ for $-$ for $0t<mi></mi>$

Fig. P$4\mathrm{.}12$