%0 Journal Article %T THE SOLUTION OF OPTIMIZATION PROBLEMS BY MEANS OF MATHCAD AND MS EXCEL %A Gubina, S.. %K Method activation end date in the past. direction:re %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 2 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov