Observe the graph:
The slope of the line is start from and the tangent line is decreases to left side of the graph.
Hence derivative of the function is suitable of the graph .
Graph is the correct choice.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f209a40bc520ba12e75487c2e3d0255f.png\")
and the tangent line is decreases to left side of the graph.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=079bcea0df9b01e3afc5cde6558deaf4.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=079bcea0df9b01e3afc5cde6558deaf4.png\")
is the correct choice. ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
is the correct choice.