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Worksheet 9.5 Exercises for Extreme Values and Saddle Points
1.
Find the absolute maximum and minimum values of
\begin{equation*}
f(x,y)=x^2-xy+y^2-3y
\end{equation*}
on the region bounded by the \(x\)- and \(y\)-axes and the line \(x+y=4\text{.}\)
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