DependentVariableDerivativesComputeDerivatives Method

Compute the derivatives of the dependent variables and store them to the given array.

Compute the "fast" derivatives of the dependent variables, add them to the given "slow" derivatives, and store them to the given array. "Fast" derivatives are ones which are most important for the dynamics of the system and can be computed quickly. Some integrators optimize performance by only computing "fast" intervals when only an approximation of the overall derivative is required.