![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The logarithmic equation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cd3fd12e33f1368c2b3fefd43e07b956.png\")
.
Definition of logarithmic function: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7bbeb5631b1ca3a26b4f03ec71718020.png\")
if and only if ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c841d8a6d17028930e7ee5add1ab39e1.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=52b734d09b0e6380eab72ed065d5392e.png\")
Thus,
\(a) Is the approximate solution of ,
(b) Is not a solution of , and
(c) Is the exact solution of .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
(a) Is the approximate solution of .
(b) Is not a solution of .
(c) Is the exact solution of .