You are given the function $D(t)=1\mathrm{.}96t*e^{-0\mathrm{.}1t}$ that takes $t,$ minutes since and IV drip feed was started, and gives $D,$ drug concentration $($in hundredths of a percent$).$ Find the critical point of $D(t)$ which matches up to the time that the concentration is a maximum, and then use it to find the maximum concentration. Your value for the maximum concentration needs to be accurate to two decimal places.

Answer