rk4

rk4(f, tSpan, y0, options): any

Defined in: fixed.js:159

Integrate y’ = f(t, y) with the classic 4th-order Runge-Kutta method.

Parameters

f

Function

(t, y) => dydt; y is Array, returns Array (or scalar)

tSpan

[number, number]

[t0, tEnd] (tEnd may be < t0 for backward integration)

y0

number | number[]

Initial state

options

nSteps?

number

Number of equal steps across tSpan

step?

number

Fixed step size h > 0 (required unless nSteps given; wins if both)

Returns

any

{t, y, success, message, nfev, nsteps}