Based on the estimates of the U$.$S$.$ daily oil demand function is Q$=$ D$($p$)=48\mathrm{.}71$p$-^0\mathrm{.}25$ andsupply function is Q $==$ $$($p$)=3\mathrm{.}45$p$^0\mathrm{.}25.$ Please use calculus to determine the change indeadweight loss from a marginal increase in a tariff, evaluated where the tariff is initially zero.