For g ( v ) = v 3 {\displaystyle g(v)=v^{3}} , two cases of f ( t ) {\displaystyle f(t)} have been considered explicitly: 1.
Для g ( v ) = v 3 {\displaystyle g(v)=v^{3}} , два випадки f ( t ) {\displaystyle f(t)} були розглянуті явно: 1.