Hello,

I basically have this equation (and another very similar) to solve for my biomechanics course:

Where

**H(t)** is the heaviside function. I can find the solution

**ε(t)** as the sum of the general solution and the particular solution. The general solution is easy to get, and I can find the particular solution of type:

By replacing it into the first equation and determine

**P(t)**, however, this lead me to this equation:

The integral can be transformed by part into:

But I can't solve this, mostly because the integral is undefinite.

Thank you in advance for your help.