TY CONF TI WORKING IN THE MATHCAD PROGRAM KW MathCad KW work in the MathCad program KW MathCad mathematical calculations KW graphs KW advantages and disadvantages of the MathCad program JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES AU Chevychelov, Y.A. AU Perov, S.I. AU Levkulich, O.V. PY 2024 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov