ON THE CONCEPT OF INTEGRAL, HISTORY OF ORIGIN AND SOME COUNTER-EXAMPLES

09.09.2022 International Scientific Journal "Science and Innovation". Series A. Volume 1 Issue 5

A. Abdujobborov , Y. Tillaboev

Abstract. In the article is given information about the integral concept and the history of its origin. In addition to the Riemann integral, which is covered in the school program, a number of other integrals (Riemann-Stiltes, Daniell, Alfred Haar, Henstock-Kurzweil, Ito and Stratonovich, Chokvet) are described. The difference between integrals is explained with the help of specific examples. The concept of definite integral and its use in practical problems were explained in detail, counter-examples of some theorems were presented.

Keywords: infinitesimal, area, volume of a solid, integral, indefinite integral, surface, surface integral, sign of indefinite integral, counter derivative.