Question

Answer true or false and justify your answer let A be an n×n coefficient matrix of the matrix equation of a system of linear equations. a) If detA≠ 0, then X=Inverse of B ×A b) If detA≠0, then AX=B has a unique solution c) A²-3A+In=0n where In is the n×n identity matrix and On is the zero matrix, then inverse of A=3In-A Please help, I'm confused, your help will be appreciated.

Answer 1

Step-by-step explanation:

Cramer's Rule: Definition

Cramer's Rule is an explicit formula for the solution of a system of linear equations with as many equations as unknowns, i.e. a square matrix, valid whenever the system has a unique solution.