![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The function is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=40b6544d8ac1f614b71e8cbdfcb75a85.png\")
.
Apply derivative on each side with respect to ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8da2268e35b6b6daab9c47f71c4c8bf4.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2af23da1f39bd99487c227f7d5bf6b96.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f3e96dc2f51414861509ded87c1d0fb2.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=aef2bf485ab9b162f1c44b0a05df185e.png\")
.
The slope of the function is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=aef2bf485ab9b162f1c44b0a05df185e.png\")
.
The slope of the function is negative and undefined at ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9427e024285ad91b89d39d129677cb63.png\")
.
Observe the graphs:
\The graph of the option ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=76126a6e65cf18ee9a6067252f18e459.png\")
has negative slope and is undefined at ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9427e024285ad91b89d39d129677cb63.png\")
.
Therefore, the correct choice is option ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=76126a6e65cf18ee9a6067252f18e459.png\")
.
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The correct choice is option .