So I am really interested in taking a minor in mathematics to compliment the B.S. in chemistry that I'm currently working on. So the way my school has the minor set up is if you have taken calc I,II &III you only need to take 9 units of upper division math classes with calc III as the prerequisite. So looking over the catalog I have picked Methods in Math I&II which covers everything from introduction to liner algebra, eigen values, ODE's, vector calculus, and a long list of other things. A lot of this I have already briefly covered in calc II, III & differential equations for engineers (I took the class as part of a study abroad program), so I feel ready for these classes but they only fulfill 6 of the 9 units for the minor. What I'm struggling with is trying to decide what to take for the last class so i can submit the paperwork to the math department. The two I have narrowed it down to are Partial Differential Equations or Discrete Dynamic Systems and Chaos. Both classes sound really interesting and at the moment I have no idea what field of chemistry I want to pursue other then I want to go to grad school. Which of these two do you think would be more applicable? At the moment the Chaos class does sound more interesting but I'm not sure if it will be all that applicable compared to the PDE class. Thank you all in advanced.