Advertisements
Advertisements
Question
If A = `[(1, 2),(3, 4)] and "B" = [(2, 1),(4, 2)], "C" = [(5, 1),(7, 4)]`, compute (B + C)A
Solution
(B + C)A
A = `[(1, 2),(3, 4)]`
B = `[(2, 1),(4, 2)]`
C = `[(5, 1),(7, 4)]`
(B + C)A = `[(7, 2),(11, 6)] xx [(1, 2),(3, 4)]`
= `[(7 + 6, 14 + 8),(11 + 18, 22 + 24)]`
= `[(13, 22),(29, 46)]`.
APPEARS IN
RELATED QUESTIONS
Solve for x and y:
`[(2, 5),(5, 2)][(x),(y)] = [(-7),(14)]`
If `P = [(2,6),(3,9)]` and `Q = [(3,x),(y, 2)]` find x and y such that PQ = null matrix
`If A = [(1, -2 ,1), (2,1,3)] and B= [(2,1),(3,2),(1,1)]`;
Write down the product matrix AB.
Construct a 2 x 2 matrix whose elements aij are given by
aij = 2i - j
If A = `[(3 , 1),(-1 , 2)]` and B =`[(7),(0)]`, find matrix C if AC = B.
If A = `[(1 , -2),(2, -1)] and "B" = [(3, 2),(-2, 1)]` Find 2B – A2
If A = `[(1, 0),(0, -1)]`, find A2 and A3.Also state that which of these is equal to A
If A = `[(3, x),(0, 1)] and "B" = [(9, 16),(0, -y)]`find x and y when A2 = B
Choose the correct answer from the given four options :
If A = `[(3, 1),(-1, 2)]`, then A2 =
If A = `[(3, 2),(0, 5)] and "B" = [(1, 0),(1, 2)]` find the each of the following and state it they are equal: (A + B)(A – B)
