//! Numerical methods for solving ODEs
//!
//! Provides numerical solvers for first-order ordinary differential equations
//! when symbolic solutions are not available or practical. Includes:
//!
//! - **Euler method**: Simple first-order method for basic problems
//! - **Runge-Kutta 4th order (RK4)**: Classic fourth-order accurate method
//! - **Adaptive RKF45**: Runge-Kutta-Fehlberg with automatic step size control
//!
//! All methods work with floating-point functions f(x, y) representing dy/dx = f(x, y).
pub use ;
pub use ;
pub use ;