Solving the endmoments of fixedended beams by integration. The idea is to use the formula of endmoments due to concentrated load anywhere between the span.

Related Link:
http://mathalino.com/node/1819

In this link: https://mathalino.com/node/1816 the solution is by AreaMoment Method. I encourage you to try it using the approach on this video and compare the results.

Background Music: No Good Right by No Freedom Trail Studio, Royalty Free Music available at Youtube Audio Library