The function is in the interval .
Graph the function .
Observe the graph:
The function is a linear it shows in the interval of .
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=312129d94489c9614030a44c4fe2fb47.png\")
in the interval ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=83cf98754a0b1849d3b7df4ad7c03663.png\")
. in the interval .![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=312129d94489c9614030a44c4fe2fb47.png\")
.![\"\"](\"/userfiles/33620(1).gif\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=83cf98754a0b1849d3b7df4ad7c03663.png\")
.