y - axis is the symmetry.so the equation of the given graph is . \ \
The complete graph of the equation .
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. \ \
. \ \
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c62f36c88008b2750928a1e8d06d860f.png\")
.