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| Math Central | Quandaries & Queries |
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Question from Alex, a parent: y= - log(x), where y = 4.3 solve for x. |
Hi Alex,
I think the key to this problem is the fact about logarithms that says
log(ab) = b log(a).
Applying this to your problem
- log(x) = (-1) log(x) = log(x-1) = log(1/x).
Hence the problem becomes
4.3 = log(1/x), solve for x.
Is that enough help to solve the problem? Write back if you need more assistance.
Harley
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