The function is .
Apply first derivative on each side.
.
Apply second derivative on each side.
Substitute in the above equation.
Thererefore, .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c3db6ebf78ed9969817b2e2f82f77ee7.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a21613d404e240c7664f668ec5811e05.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b92550af71f8b43bc30110180d547f68.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e9f84e26ce88bc89adb44ccd6f3cc0de.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ccc8b6edeae9589dc9c79c5c8bfff09f.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a20e55baba25bbc5e7349df174f2a274.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6d8d79f55df49f93254c26c7a1e64c16.png\")
in the above equation.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=76c436197de16413aae38387bc7fb5ef.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0b0980cef3b1a9fbb58a54462c757e87.png\")
..![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
.