%0 Conference Article %T USING THE GEOGEBRA TOOLKIT TO SOLVE OPTIMIZATION PROBLEMS USING A GRAPHICAL METHOD %A Efimov, G.N. %A Efimov, D.G. %K Visualization, optimality, GeoGebra, nonlinear programming. %J Digital transformation in the economy of the transport complex %D 2026 %P 4 %I INFRA-M Academic Publishing LLC.