document.write( "Question 178929This question is from textbook
\n" ); document.write( ": ) Determine whether the argument is valid or invalid. \r
\n" ); document.write( "\n" ); document.write( " A tree has green leaves or the tree does not produce oxygen.
\n" ); document.write( " This tree has green leaves
\n" ); document.write( " ------------------------------------------------------------------------
\n" ); document.write( " therefore This tree does not produce oxygen.
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #133871 by Mathtut(3670) $\"\"$ $\"About$

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A tree has green leaves or the tree does not produce oxygen.
\n" ); document.write( " This tree has green leaves
\n" ); document.write( " ------------------------------------------------------------------------
\n" ); document.write( " \ This tree does not produce oxygen.
\n" ); document.write( ":
\n" ); document.write( "

\r\n" );
document.write( "p=tree has green leaves. q=tree does not produce oxygen \r\n" );
document.write( "p   q   pvq \r\n" );
document.write( "t   t    t      tree has green leaves. tree does not produce oxygen \r\n" );
document.write( "t   f    t       tree has green leaves. tree produces oxygen \r\n" );
document.write( "f   t    t       \r\n" );
document.write( "f   f    f\r\n" );
document.write( ":\r\n" );
document.write( " since it is an \"or\" this argument is invalid       \r\n" );
document.write( "

\n" ); document.write( "

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