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| Math Central | Quandaries & Queries |
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Question from dave, a student: solve for x (log base 2 of x) - (log base 2 of (x-2)) = 3 |
Dave,
The solution to this problem hinges on two properties of the logarithm functions. First, for a log function to any base a
loga(p) - loga(q) = loga(p/q)
The second property of the log base a is that
aloga(r) = r
Apply these properties to your problem where a = 2 and see if you can solve it. If you need more assistance write back,
Penny
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