![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The function is ![\"C](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1d165031d39c1646716e13c74589846b.png\")
.
![\"fraction](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dec0c7c9de99b0823da598be6feeca78.png\")
(Apply derivative with respect to t)
![\"C](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0132f240cac2d9007a6bd48493cbcd6c.png\")
(Apply the quotient rule)
![\"C](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ff8b8ce03fa508dbbee2d7ebff741ef9.png\")
(Apply the power rule)
![\"C](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5d29c226343e5d825500c2b1e8279923.png\")
(Simplify)
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
![\"C](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bcab0d6326ec8c0da87305a9a063311b.png\")
(Simplify)
![\"C](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e34c44fe21a8547816bbf726c4e0a3d2.png\")
(Simplify)
![\"C](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c6cd855d1be81f33d1f75eba48de95c5.png\")
(Take out common term 3)
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
Therefore time ![\"open](\"http://www.wiris.com/portal/plugins/demo/fckeditor/php/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2400fc503d6e0f2655fd51604c4aa163.png\")
.