سوال ۲۸ کنکور ارشد علوم کامپیوتر ۱۳۹۸

Read the following excerpt from PASSAGE 3 and answer the question.

Direct approach. By a direct method, we mean a procedure through which a solution to an IEP can be found in finitely many arithmetic operations. It might be surprising that, for nonlinear systems such as IEPs, such a method could ever exist. However, most IEPs with Jacobi structure can be solved by the Lanczos method that terminates in finitely many steps. The paper by Boley and Golub (1987) offers a good survey of this method.

A direct approach for solving the IEP has been developed due to _______.