![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Conditional statement: If a number is a positive, then its opposite is positive.
\Hypothesis: a number is a positive.
\Conclusion: its opposite is positive.
\The statement is false. The number ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d5a5054f99fdf8853c89468cc75dcef8.png\")
is a counterexample, because ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d5a5054f99fdf8853c89468cc75dcef8.png\")
is a positive but its opposite value ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=74f3d3e4c40071d7ac71e61153308410.png\")
is not a positive.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
Hypothesis: a number is a positive,
\Conclusion: its opposite is positive and the statement is false.