## 2.10.3 Matrices, SPM Paper 2 (Long Questions)

Question 8:The inverse matrix of ( 4 −1 2 5 ) is t( 5 1 −2 n ). (a) Find the value of n and of t.(b) Write the following simultaneous linear equations as matrix equation:4x – y = 72x + 5y = –2Hence, using matrix method, calculate the value of x and of y.Solution: (a) t( 5 1 −2 n )= ( … Read more