![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The function is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dd8193c74b487ca6d3fa90de61bfe21f.png\")
.
The domain of the function is all real values of ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8da2268e35b6b6daab9c47f71c4c8bf4.png\")
, which makes the function mathematically correct.
The function under square root always should be greater than zero.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a6d688f15960c37c61a0669ee2a0038f.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6bef70de00be76a401bd373938029f14.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=612420aeb6881cc60bf2def875ec5db7.png\")
The domain of the funcion is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ddac432b874d4fd3aac8f5e2369b4b3e.png\")
.
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The domain of the funcion is .