How to solve using the change of base formula
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How to solve using the change of base formula

[From: ] [author: ] [Date: 11-09-04] [Hit: ]
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Use an appropriate change of base formula to convert the following expression to one with the indicated base.

log(x^2 + 1) to base e

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log(x^2 + 1) = y
10^y = x^2 + 1
ln(10^y) = ln(x^2 + 1)
y * ln(10) = ln(x^2 + 1)
y = ln(x^2 + 1) / ln(10)

log(x^2 + 1) = ln(x^2 + 1) / ln(10)
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