Calculating first integral

[Sergey_Novak]

Hello! I have an ODE system of 7 equations, and calculating the first integral analytically is a bit difficult for me. Are there packages for calculating the first integral of the ODE system?
Thank you for help

[stevengj]

@Sergey_Novak

Hello! I have an ODE system of 7 equations, and calculating the first integral analytically is a bit difficult for me. Are there packages for calculating the first integral of the ODE system?

In general, there won’t be a closed form analytical integral of an ODE system, and you’ll have to solve the ODE numerically. For numerical ODE solvers in Julia, see DifferentialEquations.jl

[Sergey_Novak]

Thank you