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==Integration==
==Integration==
===Definition===
===Definition===
If <math> f</math> is a function of [[bounded variation]], then the [[Riemann integral]] of <math> f</math> is defined as the limit of a [[Riemann sum]]:
If <math> f</math> is a function of bounded variation, then the [[Riemann integral]] of <math> f</math> is defined as the limit of a [[Riemann sum]]:
:<math>\int\limits_{x_1}^{x_N} f(x) dx = \lim_{dx\to 0} \sum_{i=1}^N f(x_i)*dx</math>.
:<math>\int\limits_{x_1}^{x_N} f(x) dx = \lim_{dx\to 0} \sum_{i=1}^N f(x_i)*dx</math>.