Question

Which of these statements is incorrect about iterative methods?

(a) Low computational cost

(b) Low computer storage

(c) Not suitable for sparse matrices

(d) Needs initial guess

Answer 1

Right option is (c) Not suitable for sparse matrices

Easiest explanation: Iterative methods are chosen when the coefficient matrix is sparse (less non-zero elements). They need less storage and less computational cost. They start the solution from an initial guess and proceed to find the answer from this initial guess.