Euler

The Euler integration method is the simplest integration method available. A single-step method with only one function evaluation per integration step, its cycle time is the smallest, making it relatively fast and especially suitable for real-time simulations.

Mathematical Formula

x(t+h)=x(t)+h*f(x,t)

Its stability range is high, however, at the trade-off of a higher discretion error that, at the same step size, is typically higher than with the other methods (lowest order).