The equation is
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Find the formula for
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The formula of
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=79e695194c56bebe6afa6f560d02943d.png\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7e3f6703655e318b37f62385801494c8.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1d9b410608e31b0fd1356ac42f3bce07.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dba0140e6ddf0e3e3e50e102de365252.png\")