• Cubic is the default setting for the FitDegree option for SolveFree and SolvePath. Cubic specifies a cubic approximation of each section of the integrand.
• Lower settings than Cubic may work better if the system being integrated exhibits sharp discontinuities in acceleration.
• The Cubic setting uses cubic interpolation for the predictor step, and quartic interpolation for the corrector step.
• See also: Linear, Quadratic, Quartic.