# Math Help - Natural Logarithms

1. ## Natural Logarithms

I was wondering if I could get any help on this, I'm quite not sure what I'm doing wrong

Any help would be much appreciated

Thanks!

2. ## Re: Natural Logarithms

You want to use:

$\log_a(b)-\log_a(c)=\log_a\left(\frac{b}{c} \right)$

not:

$\log_a(b)-\log_a(c)=\frac{\log_a(b)}{c}$

The latter is not an identity.

3. ## Re: Natural Logarithms

Ahh, simple!

Thanks for that.