Interface SecondOrderDifferentialEquations

 All Superinterfaces:
SecondOrderODE
@Deprecated public interface SecondOrderDifferentialEquations extends SecondOrderODE
Deprecated.as of 1.0, replaced withSecondOrderODE
This interface represents a second order differential equations set.This interface should be implemented by all real second order differential equation problems before they can be handled by the
converter to first order
.A second order differential equations problem, as seen by an integrator is the second time derivative
d2Y/dt^2
of a state vectorY
, both being one dimensional arrays. From the integrator point of view, this derivative depends only on the current timet
, on the state vectorY
and on the first time derivative of the state vector.For real problems, the derivative depends also on parameters that do not belong to the state vector (dynamical model constants for example). These constants are completely outside of the scope of this interface, the classes that implement it are allowed to handle them as they want.


Method Summary
All Methods Instance Methods Abstract Methods Default Methods Deprecated Methods Modifier and Type Method Description default double[]
computeSecondDerivatives(double t, double[] y, double[] yDot)
Deprecated.Get the current time derivative of the state vector.void
computeSecondDerivatives(double t, double[] y, double[] yDot, double[] yDDot)
Deprecated.Get the current time derivative of the state vector.
Methods inherited from interface org.hipparchus.ode.SecondOrderODE
getDimension




Method Detail

computeSecondDerivatives
default double[] computeSecondDerivatives(double t, double[] y, double[] yDot)
Deprecated.Get the current time derivative of the state vector. Specified by:
computeSecondDerivatives
in interfaceSecondOrderODE
 Parameters:
t
 current value of the independent time variabley
 array containing the current value of the state vectoryDot
 array containing the current value of the first derivative of the state vector Returns:
 second time derivative of the state vector

computeSecondDerivatives
void computeSecondDerivatives(double t, double[] y, double[] yDot, double[] yDDot)
Deprecated.Get the current time derivative of the state vector. Parameters:
t
 current value of the independent time variabley
 array containing the current value of the state vectoryDot
 array containing the current value of the first derivative of the state vectoryDDot
 placeholder array where to put the second time derivative of the state vector

