Find the value of x for which the matrix product equal to an identity matrix.
We know, is identity matrix of size 3.
So according to the given criteria
Now we will multiply the two matrices on LHS using the formula cij = ai1b1j + ai2b2j + … + ainbnj, we get
And to satisfy the above condition of equality, the corresponding entries of the matrices should be equal
So we get
So the value of x is