Kamolidin Shodiyev,. EXTENSIVE USE OF MATHEMATICAL METHODS IS AN IMPORTANT FACTOR IN IMPROVING ECONOMIC ANALYSIS. IEJRD - International Multidisciplinary Journal [Internet]. 2021 Jun. 25 [cited 2026 Apr. 17];6(3):1-9. Available from: http://www.iejrd.com/index.php/iejrd/article/view/2144