![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The quadratic function is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ec68f84da1d58ea6e78d5c2a7be5c5de.png\")
.
Graph:
\Graph the function :
![\"\"](\"/userfiles/23-255-45.gif\")
Observe the graph:
\The function opens downwards and has a maximum value.
\The maximum or minimum value of the function is the ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b1f02a70f7489dd3b8742e9e1c94d6d0.png\")
-coordinate of the vertex.
The maximum value of the function is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f9b2073db5b6f1921bf9aff90bb817ee.png\")
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The maximum value of the function is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f9b2073db5b6f1921bf9aff90bb817ee.png\")
.