For the function $D(t)=12\mathrm{.}82-e^{-6\text{l}\text{i}\text{e}}($blood concentrational an anestaticl deternine whichat the followingin the correct derivalive $D(t).$

$D^{\text{'}}(t)=-6\mathrm{.}4c^{-40}$

$Df(f)=-64e^2*e^{-1\mathrm{.}5}$

$D(n)=12\mathrm{.}8e^{-0\mathrm{.}3}-6\mathrm{.}4t-e^{-4\mathrm{.}3}$

$D^{\text{'}}(t)=12\mathrm{.}8e^{-4\mathrm{.}4}-6\mathrm{.}44*e^{-3\mathrm{.}3}$

$D(t)=12\mathrm{.}8e^{-6\mathrm{.}5}-6\mathrm{.}4t^2*e^{-1\mathrm{.}2}$