Question

Find the correct statement. Cramer’s rule can be used to solve, _______ 

(a) n equations in n unknowns 

(b) When determinant of the coefficient matrix is nonzero. 

(c) The number of unknowns need not be equal to a number of equations.

(d) For infinite solutions

Answer 1

(a) n equations in n unknowns & (b) When determinant of the coefficient matrix is non-zero.