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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: High school
Topic ID: 163
Message ID: 2
#2, RE: solving exponential equations
Posted by Azrael on May-06-02 at 09:36 PM
In response to message #0
You can solve it by graphing both equations and seeing where they cross.

or you can take the ln of both sides and solve for x.

x=2 or when graphed x=(approx) -.7666647 and x=2.

because logs have a strict domain of x > 0.