# Math Help - logs and expo

1. ## logs and expo

Write each expression as a sum and/or difference of logarithms. Express powers as factors and simplify where necessary

ln(x/(e^x))

this is wat i did

ln x - loge e^x

lnx - x

2. Originally Posted by math321
Write each expression as a sum and/or difference of logarithms. Express powers as factors and simplify where necessary

ln(x/(e^x))

this is wat i did

ln x - loge e^x

lnx - x
Yep, no problem there

3. Originally Posted by math321
Write each expression as a sum and/or difference of logarithms. Express powers as factors and simplify where necessary

ln(x/(e^x))

this is wat i did

ln x - loge e^x

lnx - x
yes,you're right.

$\ln(\frac{x}{e^x})=\ln x-x$
$\ln$ is the natural logarithm.
$x$ is strictly positive.