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The Del Operator

The Del Operator is defined as the following:

If we look at del, we notice it's made up of operators and vectors.

But what's an operator? The differential operator ddx acting on a function f(x) determines the derivative of f(x) w.r.t. x. ddxf(x)df(x)dx Operators are non commutative which means order matters! ddxf(x)f(x)ddx.