O método das equações diferenciais

In DOI: https://doi.org/10.3126/jnms.v4i2.41462 we set out a powerful and basic method for solving linear differential equations in general (see also later articles cited in https://pt.slideshare.net/lossian/new-information-on-the-generalized-eulertricomi-equation?qid=7b7befcb-3d46-48ee-b6e2-bf5aa63c8b12&v=&b=&from_search=6). The solutions that the method provides are loaded with special features. The method allows results like the one below (handwritten in Portuguese).