Hello, currently a student in L1 STAPS in Reims, I am graduating from 3 years of high school and I know to what extent these subjects can pose a problem for some students who pass their scientific BAC or prepare for their diploma in college. I obtained my Bac S with honors in 2017; do not hesitate to contact me if you need assistance in any of these matters. We will go through the course together first, then do some exercises together, before you can do them on your own.