Logarithm equations (solving for x)
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Logarithm equations (solving for x)

[From: ] [author: ] [Date: 12-12-08] [Hit: ]
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Use log to solve 3^(5x-1)=23
I think the first step is 5x-1log3=log23? Not sure what comes next please help?

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(5x - 1) * log(3) = log(23) is a fine first step. Now, distribute

5x * log(3) - log(3) = log(23)
5x * log(3) = log(23) + log(3)

Remember: log(a) + log(b) = log(a * b)

5x * log(3) = log(23 * 3)
5x * log(3) = log(69)
x = log(69) / (5 * log(3))

There you go.
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