$\"\"$

The objective function is $\"\"$ .

Construct a table to evaluate objective function at the corresponding points. \ \

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

Corner point $\"\"$	\ Value of the objective function \ $\"\"$ \
$\"\"$	\ $\"\"$ \
$\"\"$	\ $\"\"$ \
$\"\"$	\ $\"\"$ \
$\"\"$	\ $\"\"$ \
$\"\"$	\ $\"\"$ \

From the table, maximum value of the objective function is $\"\"$ and minimum value is $\"\"$ .

$\"\"$

The maximum value of the objective function is $\"\"$ and minimum value is $\"\"$ .