The function is .
Find the vertex.
Graph:
Graph the function is .
Observe the graph:
The parabola opens upwards, so the vertex is located at the minimum point.
The vertex point is .
Graph of the function is :
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=050f0e7926b800d04645899e1a93f14c.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=050f0e7926b800d04645899e1a93f14c.png\")
.![\"\"](\"/userfiles/22-533-60.gif\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=03c44df4f0aa1d875c7e6d853732823e.png\")
.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
:![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=03c44df4f0aa1d875c7e6d853732823e.png\")
.