document.write( "Question 539617: I have to make the following compound statement into a truth table and i do not understand how to construct the table.\r
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document.write( "q ∨ (p → ∼r) \n" );
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Algebra.Com's Answer #353497 by AnlytcPhil(1806)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "The parts that make up that expression q V (p -> ~r) are \r\n" ); document.write( "p, q, r, ~r, (p -> ~r), and q V (p -> ~r). Make a heading for each of these.\r\n" ); document.write( "When there are three variables, the truth table will have 8 rows.\r\n" ); document.write( "\r\n" ); document.write( "Start with this:\r\n" ); document.write( "\r\n" ); document.write( "p | q | r | ~r | (p -> ~r) | q V (p -> ~r)\r\n" ); document.write( "------------------------------------------\r\n" ); document.write( " | | | | | \r\n" ); document.write( " | | | | | \r\n" ); document.write( " | | | | | \r\n" ); document.write( " | | | | | \r\n" ); document.write( " | | | | | \r\n" ); document.write( " | | | | | \r\n" ); document.write( " | | | | | \r\n" ); document.write( " | | | | | \r\n" ); document.write( "\r\n" ); document.write( "Fill in the p column with the first half T's and last half F's\r\n" ); document.write( "\r\n" ); document.write( "p | q | r | ~r | (p -> ~r) | q V (p -> ~r)\r\n" ); document.write( "------------------------------------------\r\n" ); document.write( "T | | | | | \r\n" ); document.write( "T | | | | | \r\n" ); document.write( "T | | | | | \r\n" ); document.write( "T | | | | | \r\n" ); document.write( "F | | | | | \r\n" ); document.write( "F | | | | | \r\n" ); document.write( "F | | | | | \r\n" ); document.write( "F | | | | |\r\n" ); document.write( "\r\n" ); document.write( "Fill in the q column with 2 T's, 2 F's, 2 T's, 2 F's:\r\n" ); document.write( "\r\n" ); document.write( "p | q | r | ~r | (p -> ~r) | q V (p -> ~r)\r\n" ); document.write( "------------------------------------------\r\n" ); document.write( "T | T | | | | \r\n" ); document.write( "T | T | | | | \r\n" ); document.write( "T | F | | | |\r\n" ); document.write( "T | F | | | | \r\n" ); document.write( "F | T | | | |\r\n" ); document.write( "F | T | | | | \r\n" ); document.write( "F | F | | | |\r\n" ); document.write( "F | F | | | |\r\n" ); document.write( "\r\n" ); document.write( "Fill in the r-column alternating T,F,T,F,T,F,T,F \r\n" ); document.write( "\r\n" ); document.write( "p | q | r | ~r | (p -> ~r) | q V (p -> ~r)\r\n" ); document.write( "------------------------------------------\r\n" ); document.write( "T | T | T | | | \r\n" ); document.write( "T | T | F | | | \r\n" ); document.write( "T | F | T | | |\r\n" ); document.write( "T | F | F | | | \r\n" ); document.write( "F | T | T | | |\r\n" ); document.write( "F | T | F | | | \r\n" ); document.write( "F | F | T | | |\r\n" ); document.write( "F | F | F | | |\r\n" ); document.write( "\r\n" ); document.write( "Fill in the ~r column as the opposite of the r column\r\n" ); document.write( "\r\n" ); document.write( "p | q | r | ~r | (p -> ~r) | q V (p -> ~r)\r\n" ); document.write( "------------------------------------------\r\n" ); document.write( "T | T | T | F | | \r\n" ); document.write( "T | T | F | T | | \r\n" ); document.write( "T | F | T | F | |\r\n" ); document.write( "T | F | F | T | | \r\n" ); document.write( "F | T | T | F | |\r\n" ); document.write( "F | T | F | T | | \r\n" ); document.write( "F | F | T | F | |\r\n" ); document.write( "F | F | F | F | |\r\n" ); document.write( "\r\n" ); document.write( "Fill in the (p -> ~r) column by this rule: If the\r\n" ); document.write( "p column has a T and the ~r column has a F, then put\r\n" ); document.write( "an F in the (p -> ~r) column; otherwise put a T.\r\n" ); document.write( "\r\n" ); document.write( "p | q | r | ~r | (p -> ~r) | q V (p -> ~r)\r\n" ); document.write( "------------------------------------------\r\n" ); document.write( "T | T | T | F | F | \r\n" ); document.write( "T | T | F | T | T | \r\n" ); document.write( "T | F | T | F | F |\r\n" ); document.write( "T | F | F | T | T | \r\n" ); document.write( "F | T | T | F | T |\r\n" ); document.write( "F | T | F | T | T | \r\n" ); document.write( "F | F | T | F | T |\r\n" ); document.write( "F | F | F | F | T |\r\n" ); document.write( "\r\n" ); document.write( "Fill in the q V (p -> ~r) by this rule:\r\n" ); document.write( "If both the q column and the (p -> ~r) column\r\n" ); document.write( "have F's, then put an F in the q V (p -> ~r)\r\n" ); document.write( "column; otherwise put T.\r\n" ); document.write( "\r\n" ); document.write( "p | q | r | ~r | (p -> ~r) | q V (p -> ~r)\r\n" ); document.write( "------------------------------------------\r\n" ); document.write( "T | T | T | F | F | T \r\n" ); document.write( "T | T | F | T | T | T\r\n" ); document.write( "T | F | T | F | F | F\r\n" ); document.write( "T | F | F | T | T | T\r\n" ); document.write( "F | T | T | F | T | T\r\n" ); document.write( "F | T | F | T | T | T\r\n" ); document.write( "F | F | T | F | T | T\r\n" ); document.write( "F | F | F | F | T | T\r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |