1. The problem statement, all variables and given/known data We have this feedback loop, with R1=R2 and C3=C4 hebergeur d image 2. Relevant equations I believe we should use KCL or KVL to solve the question. 3. The attempt at a solution I didn't understand how this equation was found: I tried KCL to find a relation between V0 and V but I didn't succeed to arrive to this equation téléchargement de photos Thank you guys in advanced!