Need solution for RD Sharma maths class 12 chapter Algebra of matrices exercise 4.3 question 49
Hint: Matrix multiplication is only possible, when the number of columns of first matrix is equal to the number of rows of second matrix.
is identity matrix of order 2
Since, corresponding entries of equal matrices are equal, so
Multiply equation i by 4 and subtract equation ii from i
Put a=4 in equation (i)
Multiply equation iii by 2 and add equation iii and iv
Put d=1 in equation iii