Hi, There are several packages for numerical integration in Julia.
- For one-dimensional numerical integration QuadGK.jl https://github.com/JuliaMath/QuadGK.jl
- For higher dimensional quadrature HCubature.jl https://github.com/stevengj/HCubature.jl or NIntegration.jl https://github.com/pabloferz/NIntegration.jl