This looks like a brilliant resource. My problem with advanced math is not so much the understanding of principles but the application of these to solve new pr

This looks like a brilliant resource. My problem with advanced math is not so much the understanding of principles but the application of these to solve new problems creatively. I was able to master partial differential equations and pass exams but was never able to apply what was learned to solve new problems which I found very frustrating and was what ultimately led me to not pursue a career in the field.