I took Differential Equations in college, as well as partial differential equations, and how to model differential equations in C. This is usually the most advanced math course taken by most engineering students. Differential equations (or affectionately "Diff-E-Q") aren't so much unlike normal calculus problems in which one solves for an unknown, except that the unknowns in this case are other functions entirely. Instead of having just the variable in the equation, you have the function and derivatives of that function. In other words, it is the pinnacle of Calculus, its final destination (for most students). Unlike most other math disciplines, DiffEq can have more than one answer. This it a really profound conclusion, as it finally provides a "gray area" of math, with each solution given a different amount of credence. It is a worthy subject indeed.

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