Suppose λ is an eigenvalue of matrix A and x is the corresponding eigenvector. Let x also be an eigenvector of the matrix B=A-2I, where I is the identity...

Let For Ax=b to be solvable, which one of the following options is the correct condition on b1, b2, and b3:

Euclidean norm (length) of the vector [4, -2, -6]T is