The function is
(The natural logarithmic function)
(Apply the natural logarithmic function)
Therefore .
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(The natural logarithmic function)![\"italic](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6c800b40dff10edb39a76ff8ba7bae7c.png\")
(Apply the natural logarithmic function)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
.