00508naa#a2200157#i#450# EN\INFRA-M\bibl\14627 20260414115632.2 20250114b2025####ek#y0engy0150####ca RU USING THE GEOGEBRA TOOLKIT TO SOLVE OPTIMIZATION PROBLEMS USING A GRAPHICAL METHOD Conference article/thesis Moscow INFRA-M Academic Publishing LLC. 2025 4 с. Conference article/thesis local Efimov G. N. Efimov D. G. naukaru.ru