I am starting graduate school in applied math in the fall and am trying to decide if measure theory is necessary or important in terms of applied math and if so, what ares of applied math? I have taken two basic real analysis courses through multiple integrals, etc. and would like to focus on PDE's at this point, although I'm quite open to all areas of applied math at this point. The program I'll be in does not require a class on measure theory, but I do have the option to take one if I'd like. Thank you for your time.