( 1 point ) Find the absolute minimum and absolute maximum of the function f ( * , * ) = xy - by - 36.x + 216 on the region on or above Y =* = and on...

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( 1 point ) Find the absolute minimum and absolute maximum of the functionf ( * , * ) = xy - by - 36.x + 216 on the region on or above Y =* = and on or below Y = 41 andlist the points where they occur .If the absolute min or max is attained at multiple points list them all , separated by commas .Absolute minimum value ."attained atAbsolute maximum value :"attained at