2015-05-04T08:27:13ZFluxBBhttp://www.mathisfunforum.com/viewtopic.php?id=22183]]>http://www.mathisfunforum.com/profile.php?id=2076512015-05-04T08:27:13Zhttp://www.mathisfunforum.com/viewtopic.php?pid=358409#p358409My book has an example where f(x) = |2x - 3| and f(a+h) = |2(a+h) - 3| = |2a - 2h - | Why does the sign switch from positive to negative after multiplication?]]>2015-05-04T07:36:15Zhttp://www.mathisfunforum.com/viewtopic.php?pid=358394#p358394