document.write( "Question 843102: If p q is true and q is true, then p is neveralwayssometimes tr \n" ); document.write( "
Algebra.Com's Answer #507937 by Theo(13342)![]() ![]() You can put this solution on YOUR website! the symbol you were trying to show didn't show up.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the following truth table should give you your answer, since it covers all the most common symbols that you may have meant.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "p q p v q p ^ q p ---> q p <---> q\r\n" ); document.write( "\r\n" ); document.write( "T T T T T T\r\n" ); document.write( "T F T F F F\r\n" ); document.write( "F T T F T F\r\n" ); document.write( "F F F F T T\r\n" ); document.write( "\r\n" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the first 2 columns are p and q individual states (either true or false) \n" ); document.write( "the third column is p or q, with the v symbolizing or. \n" ); document.write( "the fourth column is p and q, with the ^ symbolizing and. \n" ); document.write( "the fifth column is p implies q, with the ---> symbolizing implies. \n" ); document.write( "the sixth column is q if and only if p, with the <---> symbolizing if and only if.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the question was:\r \n" ); document.write( "\n" ); document.write( "If p q is true and q is true, then p is never/always/sometimes true\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If or is indicated (v), then the answer is sometimes, because the or condition only requires that one of them be true.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If and is indicated (^), then the answer is always, because the and condition requires both of them to be true.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "if implies is indicated (--->), then the answer is sometimes because the implies condition allows q to be true regardless of whether p is true or false.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "if if and only if is indicated (<--->), then the answer is always because the if and only condition requires both to be true.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In the truth table, if you only look at the lines where Q is true, you may be able to spot this better.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Only those lines are duplicated below:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "p q p v q p ^ q p ---> q p <---> q\r\n" ); document.write( "\r\n" ); document.write( "T T T T T T\r\n" ); document.write( "F T T F T F\r\n" ); document.write( "\r\n" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you can see on the first line, that p is true and this allows all other conditions to be true.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "on the second line p is false. \n" ); document.write( "the or condition is still true and the implies condition is still true. \n" ); document.write( "the and condition and the if and only if condition, require p to also be true so they are false.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |