Dirac delta distribution: Difference between revisions

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:<math>\int_{- \infty}^{\infty} f(x) \delta (x-a) dx  = f(a)</math>
:<math>\int_{- \infty}^{\infty} f(x) \delta (x-a) dx  = f(a)</math>
[[category: mathematics]]

Revision as of 17:06, 25 May 2007

The Dirac delta distribution (or generalized function) is written as Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \delta(x)} . It is the derivative of the Heaviside step distribution,

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \frac{d}{dx}[H(x)] = \delta(x)}

It has the property

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \int_{- \infty}^{\infty} f(x) \delta (x-a) dx = f(a)}