question: @ Override public PolynomialFunctionNewtonForm interpolate ( double x [ ] , double y [ ] ) throws MathIllegalArgumentException { PolynomialFunctionLagrangeForm . verifyInterpolationArray ( x , y , true ) ; final double [ ] c = new double [ x . length - 1 ] ; System . arraycopy ( x , 0 , c , 0 , c . length ) ; final double [ ] a = computeDividedDifference ( x , y ) ; return new PolynomialFunctionNewtonForm ( a , c ) ; }
target:  Compute an interpolating function for the dataset.