TY JOUR TI DESIGNING A BRIDGE STRUCTURE WITH THE APPLICATION OF DIFFERENTIAL CALCULUS KW optimal location; profile KW derivative of function KW mathematical model KW parabolic curve KW tangent line KW slope ratio JO Scientific Papers Collection of the Angarsk State Technical University AU Panov, L.A. AU Sverdlova, O.L. PY 2024 IS 2024 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»