The original equation is and the point is (0, 4)
The tangent line equation is .
The graph the function and its tangent line at the point (0, 4)
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0d866a3fcc5dadc71744fe57b0766eff.png\")
and the point is (0, 4) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cb24ed3e74d388fa7629d3220c476be6.png\")
.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/userfiles/image/cal_page_332_pro_78b.gif\")