Calculation of Integrals in MathPartner

TL;DR

This paper discusses the capabilities of MathPartner for calculating various types of integrals, including elementary, improper, and elliptic integrals, using symbolic and numerical methods, and highlights the Lagutinski algorithm for rational integrals.

Contribution

It introduces the integration features of MathPartner, including implementation of the Risch algorithm, special functions for elliptic integrals, and the Lagutinski algorithm for rational integrals.

Findings

MathPartner can compute elementary and improper integrals with specified accuracy.

Special functions enable calculation of complete elliptic integrals and ellipse circumference.

The Lagutinski algorithm determines the existence of rational integrals in bivariate rational functions.

Abstract

We present the possibilities provided by the MathPartner service of calculating definite and indefinite integrals. MathPartner contains software implementation of the Risch algorithm and provides users with the ability to compute antiderivatives for elementary functions. Certain integrals, including improper integrals, can be calculated using numerical algorithms. In this case, every user has the ability to indicate the required accuracy with which he needs to know the numerical value of the integral. We highlight special functions allowing us to calculate complete elliptic integrals. These include functions for calculating the arithmetic-geometric mean and the geometric-harmonic mean, which allow us to calculate the complete elliptic integrals of the first kind. The set also includes the modified arithmetic-geometric mean, proposed by Semjon Adlaj, which allows us to calculate the complete elliptic integrals of the second kind as well as the circumference of an ellipse. The Lagutinski algorithm is of particular interest. For given differentiation in the field of bivariate rational functions, one can decide whether there exists a rational integral. The algorithm is based on calculating the Lagutinski determinant. Mikhail Lagutinski (1871--1915) had worked at Kharkiv (Ukraine). This year we are celebrating his 150th anniversary.