The equation is .
Rewrite the the equation.
Definition of logarithmic functions if and only if .
.
The solution set is or .
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. ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e1f15cdbd6a9e18c11e34dc1acb206d1.png\")
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if and only if ![\"y](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=348851eeb70711b5e4a454e39a5d6a9a.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=87da4bb2c0ddb99e3807188c41fde076.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d10c5bf21dd5a79ad46a7b53ecb3b530.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e4752af94ce33978420a5bc103236399.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fd51385a5cc75074b9de85bfd426556a.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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or ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2539b0ab2e761c64c9486033147da7db.png\")
.