CLEVELAND, Ohio -- One little command can cause hands to tremble, mouths to wick dry, sweat to bead on the forehead: "Find X." You know what I'm talking about. It's the dreaded math test. Uh, no ...
Differential equations is a field of math where you solve equations relating a function, its derivatives, and/or its integrals. For example, (f' (x))^2 = f (x) + x. It's a natural next step from ...