The function is .
Domain of the function is all possible values of .
Since the function is a rational function, the denominator should not be the zero. \ \
The domain of the function is .
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..![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8da2268e35b6b6daab9c47f71c4c8bf4.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c532958c883220c876dba955200fa069.png\")
is a rational function, the denominator should not be the zero. \ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6cfb3ef248386b3e88a5de40a0909c6d.png\")
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is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9543834fbf622d5bb08048942b84218f.png\")
.