1. ## Tough definite integral

$dx/(2x+7)$

limits are from 2 to 0.

The only one on my homework I cannot get...any help would be appreciated.

2. Originally Posted by calculuslyfrustrated
$dx/(2x+7)$

limits are from 2 to 0.
What's the matter?

Note that

$\int_2^0 {\frac{1}
{{2x + 7}}\,dx} = \frac{1}
{2}\int_2^0 {\frac{{(2x + 7)'}}
{{2x + 7}}\,dx} = \frac{1}
{2}\left( {\ln \left| {2x + 7} \right|\Big|_2^0} \right).$

You may go on from there.