MHB Rewrite in logarithmic form: e^(-1) = c

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Rewrite in logarithmic form:

e^(-1) = c
 
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$$\ln\left(e^{-1}\right)=\ln(c)$$

$$-1=\ln(c)$$
 
thanks
 
You have posted a number of logarithm problems without, apparently, know what a "logarithm" is! If you are not taking a class that involves logarithms, where are you getting these problems?

$y= a^x$ is equivalent to $log_a(y)= x$.
 
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