# Thread: Natural Log and Log

1. ## Natural Log and Log

Hello,

Can someone please help me solve this?

a. ln(1/e)

b.logsqrt10

2. $
\ln\left(\frac{1}{e}\right) = \ln(e^{-1})= -1\times \ln(e) = -1\times 1 = -1
$

$
\log_{10}(\sqrt{10})=\log_{10}(10^{\frac{1}{2}})= \frac{1}{2}\log_{10}(10) = \frac{1}{2}\times 1 = \frac{1}{2}
$