Question

Which of these methods will not come under a two-level method?

(a) Forward Euler method

(b) Adams method

(c) Trapezoidal method

(d) Midpoint rule

The question was asked by my college director while I was bunking the class.

The question is from Transient Flows in chapter Transient Flows of Computational Fluid Dynamics

Answer 1

Right option is (b) Adams method

For explanation I would say: The Adams method is a multipoint method. Some of the two-level methods are the forward and backward Euler methods, the midpoint rule and the trapezoidal rule. They do not use more than two points to solve the system.