Hi everyone, I have a problem with finding the transfer function of a linear system. It happens that in some terms the input and the output are multiplying and I have no idea how to do the Laplace transform of this. The system is a car and I am only studying its speed. The input is the accelerator (0«u«1) and the output is the speed (v). Please give me a hint on how to do this. I have to isolate the input and the output. My only idea is to solve this by the integral definition of the Laplace transform, but the differential equation is big enough to scare me out of doing that. Thank You All.