PYQ Vault

Matrix equations

Linear equations

Concept 8 of 10 in Determinants

1 / 13

Think about this

With numbers, 3x=63x = 6 and x⋅3=6x \cdot 3 = 6 have the same answer. Take A=[1101]A = \begin{bmatrix} 1 & 1 \\ 0 & 1 \end{bmatrix} and B=[1234]B = \begin{bmatrix} 1 & 2 \\ 3 & 4 \end{bmatrix}. Do AX=BAX = B and XA=BXA = B have the same solution XX?