The expression of the curve is .
The level curves for belongs to the family of functions .
.
Graph :
Graph the function for different values of .
\ \
Graph of the function for different values of .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=86b334b8168dcf46fb1aba42c3c37eb1.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=86b334b8168dcf46fb1aba42c3c37eb1.png\")
belongs to the family of functions ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5b83426e9a2042e898ba45836ad11e69.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bc314b08763b51a6587a2ec152ea9ff5.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d6172b88d7840e92b0ba0d5992e7b335.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e406aa95ce6c02f27ae4783decf47b1e.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0b4787c57e98924db88be9d8d6e01d29.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0b4787c57e98924db88be9d8d6e01d29.png\")
for different values of ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=397fa06c87524875a08b8582b661eb47.png\")
.![\"\"](\"/userfiles/50-914-50.gif\")
\ \
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
for different values of ..