The function f may be a pure function or a named function defined using Set or SetDelayed.
The error is given as a function of and b multiplied by an m derivative of the function f. The size of the error is bounded by the maximum of this expression over the interval from a to b.
The abscissas may or may not include the endpoints a and b of the interval. The option QuadratureType is used to control whether endpoints are included as abscissas.
With the default setting QuadratureType, the endpoints are included as abscissas.
With the setting QuadratureType, the endpoints are not included as abscissas. In this case, the initial abscissa is chosen to be a half step above the lower endpoint.