The logarithmic statement is .
Definition of logarithmic functions : if and only if .
Therefore is equal to
.
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.![\"y](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=c28083d6893a3321d229a5f677cf9bda.png\")
if and only if ![\"x](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=379ef36f03701a5b35a25633e596c351.png\")
. is equal to ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f6f51e218b85e71a014641d67952650f.png\")
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.