![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0dc7d8c75bb35004f7b31c06a0449a70.png\")
and increasing on the interval ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=267d961505c3cd0fe68bad8d728e1605.png\")
.Observe the graph, the domain of the function is all real numbers.
\The range of function is all positive real numbers.
\The graph of this function is a parabola. It is an even function that is decreasing on and increasing on the interval .
Therefore, it is a square function.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
Option ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2d76c756168edce87befeea5cdb771c0.png\")
is correct.