Introduction to differential equations

In electronic circuits (formerly electrical basics), which is one of the industrial subjects in Japanese high school, items that can be handled by AC circuits without using the differential equations performed by Steinmetz are dealt with.
This teaching material was co-authored with my colleague in Tokyo Tech High School, Tatsuya Uhana, with the intention of creating a teaching material that will serve as a bridge between mathematics and electronic circuits by describing AC circuits using differential equations.
It is also an introductory content for first-order linear differential equations, second-order linear differential equations with constant coefficients, and operational calculus. (This was created with TeX.)

Please download it from the sidebar.