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Is the q-function an elementary function or elementary function?


Asked by Ayaan Rasmussen on Dec 04, 2021 FAQ



The Q -function is not an elementary function. However, the bounds, where become increasingly tight for large x, and are often useful.
Similarly,
Elementary function. In mathematics, an elementary function is a function of one variable built from a finite number of exponentials, logarithms, constants, and roots of polynomial equations through composition and combinations using the four elementary operations.
Likewise, Non-elementary functions An example of a function that is not elementary is the error function a fact that may not be immediately obvious, but can be proven using the Risch algorithm. See also the examples in Liouvillian function and Nonelementary integral.
In addition,
Elementary function. All functions obtained by adding, subtracting, multiplying or dividing any of the previous functions It follows directly from the definition that the set of elementary functions is closed under arithmetic operations and composition. It is also closed under differentiation. It is not closed under limits and infinite sums.
Indeed,
An element h is a constant if ∂h = 0. If the base field is over the rationals, care must be taken when extending the field to add the needed transcendental constants. A function u of a differential extension F[u] of a differential field F is an elementary function over F if the function u. is algebraic over F, or.