Question

A set of linear equations is represented by the matrix equation Ax = b. The necessary condition for the existence of a solution for this system is​

Answer 1

Answer:

It is inverse matrix method which is represented by AX=B.

Hope you understood..

Answer 2

Answer: A must be an invertible matrix.

Step-by-step explanation:

• If a linear equation is represented by a matrix AX=B.
• The solution will exist only if A is an invertible matrix.
• If A is not an invertible matrix then there will be no solution.
• Hence,for the solution to exist A must be an invertible matrix.

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