# Math Help - First order DE

1. ## First order DE

L di/dt + Ri = E , find i interms of t given that i=0 when t=0

2. Originally Posted by scifreak
L di/dt + Ri = E , find i interms of t given that i=0 when t=0
$\displaystyle \frac{di}{dt} + \frac{R}{L} i = \frac{E}{L}$.

Now use the integrating factor method. If you need more help, please show your working and say where you get stuck.