The function is
(Rewrite the expression)
(Using power rule of the logarithm: )
(Given that )
Therefore .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=46b21c45e4a33120222bc0ccb4f23db1.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7400119bb36b2fb8e6fd3dfcf5f6c9b0.png\")
(Rewrite the expression)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9df1dc92d7a3b4d540e881c774db82dd.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2fec9e452ae1989f067ee15022fbb662.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ccce48994738b0ac2f0591229623680c.png\")
(Rewrite the expression)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2106f676263df554e344f9a7c0581a00.png\")
(Using power rule of the logarithm: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=187de81e2b675d6ed48bbe0ff99ed7bb.png\")
) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=250081b716eb581252742ed42e88f961.png\")
(Given that ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b7199233838184972ef9de0409ee3bad.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6e0ebf8b68aed8c5cba068053be4570f.png\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5c9e79ebe4ff0e4462ac2dc0bc649f7f.png\")
.