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Data Analysis Expressions (DAX) is the native formula and query language for Microsoft PowerPivot, Power BI Desktop and SQL Server Analysis Services (SSAS) Tabular models. DAX includes some of the functions that are used in Excel formulas with additional functions that are designed to work with relational data and perform dynamic aggregation .
The throw-out approach replaces the spring-loaded pilot chute which was released by a rip-cord. The throw-out system allows the skydiver to deploy his or her pilot chute directly into the air stream. Other inventions include the Skyhook RSL [ 5 ] [ 6 ] safety device and the "Sigma System" for tandem drogue release.
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An LU factorization refers to expression of A into product of two factors – a lower triangular matrix L and an upper triangular matrix U: =. Sometimes factorization is impossible without prior reordering of A to prevent division by zero or uncontrolled growth of rounding errors hence alternative expression becomes: P A Q = L U {\displaystyle ...
In mathematics, a real-valued function f on the interval [a, b] is said to be singular if it has the following properties: f is continuous on [ a , b ]. there exists a set N of measure 0 such that for all x outside of N, the derivative f ′ ( x ) exists and is zero; that is, the derivative of f vanishes almost everywhere .
Lotus 1-2-3 was the leading spreadsheet when DOS was the dominant operating system. [12] Microsoft Excel now has the largest market share on the Windows and Macintosh platforms. [ 13 ] [ 14 ] [ 15 ] A spreadsheet program is a standard feature of an office productivity suite .
In linear algebra, Cramer's rule is an explicit formula for the solution of a system of linear equations with as many equations as unknowns, valid whenever the system has a unique solution. It expresses the solution in terms of the determinants of the (square) coefficient matrix and of matrices obtained from it by replacing one column by the ...
Singular or weakly singular: An integral equation is called singular or weakly singular if the integral is an improper integral. [7] This could be either because at least one of the limits of integration is infinite or the kernel becomes unbounded, meaning infinite, on at least one point in the interval or domain over which is being integrated. [1]