Drug Metabolism The rate at which a drug is absorbed into the bloodstream is modeled by the first-order differential equation:

http://homework.math.ucsb.edu/webwor...a12d8e9041.png
where

and

are positive constants and

denotes the concentration of the drug in the bloodstream at time . Assume no drug is initially present in the bloodstream.

Find a formula for

. You may need to use

and

in your answer.

*I think it may be the constants a and b, but something's throwing me off on how to do this. So far I've tried:* *And then I'm guessing I need to use an integrating factor? Or am I just completely wrong here. Any help is greatly appreciated!*