And not taking ODE's? Is this doable? I understand the basics of most concepts as I am currently self-learning from online resources and textbooks, but I decided not take the class during the summer as I'm already taking calc III. The problem is that when the year starts up again PDE's is taught in first semester, while ODE's in second semester. Also, I want to take two third year courses that require PDE's as a prerequisite in second semester of next school year. So, would a basic knowledge of ODE's and calc III be sufficient for a PDE class?