/** * @param a start parameter * @param b end parameter * @param funX x(t) * @param funY y(t) * @param funZ z(t) * @return an interval within [a, b] where the funX, funY, funZ are defined. */ public static double[] getDefinedInterval( double a, double b, RealRootFunction funX, RealRootFunction funY, RealRootFunction funZ) { // compute interval for x(t) double[] interval = RealRootUtil.getDefinedInterval(funX, a, b); // compute interval for y(t) and update interval RealRootUtil.updateDefinedIntervalIntersecting(funY, a, b, interval); // compute interval for z(t) and update interval RealRootUtil.updateDefinedIntervalIntersecting(funZ, a, b, interval); return interval; }