sorry for my bad english, but this problem is translated from french. In this problem, i have to make a low-pass AM radio filter using the following information: frequency: 130 kHz Condensor Capacity: 12 nF This filter must be installed in parallel with the synthesisor. It says to use Ohm`s law and Kirchhoff`s rule to solve the problem. Before i can solve this problem, i must find a differential equation to solve. If there is not enough information, i will try to find some more but the problem only includes these values.