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 Author Comment/Response David 03/14/13 4:30pm Hi everyone, when I use the FindMaximum with constraints that all variables are integers, I get the following result: FindMaximum[{3 b + c + 3 d, 2 b + 2 c + d <= 30 && b + 2 c + 3 d <= 25 && 2 b + c + d <= 20 && b \[Element] Integers && c \[Element] Integers && d \[Element] Integers}, {b, c, d}] {36., {b -> 7, c -> 0, d -> 5}} But the correct result should be {39., {b -> 7, c -> 0, d -> 6}}. After I remove the integer constraint on one of the variables, I get the correct results. {3 b + c + 3 d, 2 b + 2 c + d <= 30 && b + 2 c + 3 d <= 25 && 2 b + c + d <= 20 && b \[Element] Integers && c \[Element] Integers}, {b, c, d}] {39., {b -> 7, c -> 0, d -> 6.}} Could any one tell me why? URL: ,

 Subject (listing for 'Query about the Integers constraints in FindMax...') Author Date Posted Query about the Integers constraints in FindMax... David 03/14/13 4:30pm Re: Query about the Integers constraints in Fin... Forum Modera... 03/15/13 09:19am Re: Re: Query about the Integers constraints in... David 03/15/13 09:51am
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