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e. In mathematical analysis, the Dirac delta function (or δ distribution ), also known as the unit impulse, [ 1 ] is a generalized function on the real numbers, whose value is zero everywhere except at zero, and whose integral over the entire real line is equal to one. [ 2 ][ 3 ][ 4 ] Since there is no function having this property, modelling ...
A Dirac measure is a measure δx on a set X (with any σ -algebra of subsets of X) defined for a given x ∈ X and any (measurable) set A ⊆ X by. where 1A is the indicator function of A . The Dirac measure is a probability measure, and in terms of probability it represents the almost sure outcome x in the sample space X.
McDonnell Douglas DC-X. The DC-X, short for Delta Clipper or Delta Clipper Experimental, was an uncrewed prototype of a reusable single-stage-to-orbit launch vehicle built by McDonnell Douglas in conjunction with the United States Department of Defense 's Strategic Defense Initiative Organization (SDIO) from 1991 to 1993.
Delta Lea Goodrem was born in Sydney on 9 November 1984, [5] [6] to Lea (née Parker) and Denis Goodrem. [7] [8] She has a younger brother, Trent.[9]Goodrem appeared in an American advertisement aged seven for the former toy company Galoob, alongside fellow Australian Bec Hewitt, [10] and began playing piano at the same age while taking up singing, dancing and acting lessons.
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A delta forms where a river meets a lake. [ 10] River deltas form when a river carrying sediment reaches a body of water, such as a lake, ocean, or a reservoir. When the flow enters the standing water, it is no longer confined to its channel and expands in width. This flow expansion results in a decrease in the flow velocity, which diminishes ...
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