Case study Chapter 3 (Matrix)

Case study 2:- Amit, Biraj and chirag were giventhe task of creating a square matrix of order 2. Below are the matrices created by them. A, B, C are the matrices created by Amit, Biraj and Chirag respectively.(Case study problem matrix 2)

If a = 4 and b = -2

Based on the above information answer the following question.

(i) (a)Â  Find the sum of the matrices A, B and C, A+(B+C).

(b) Evaluate .

(ii) (a) Find th matrices AC – BC.

(b) Find the matrix of (a + b)B.

Solution (i) (a) We have,

(b) We have

(ii) (a) we have,

(b) We have,

Case study 1:- Read the following and answer the question(Case study problem matrix 1)

Â  Â A manufacturer produces three stationery products Pencil, Eraser and Sharpner which he sells in two markets. Annual sales are indicated below

Case study 3:- Read the following and answer the question:(Case study problem matrix 3)

Â  Â  Â  Â  Three schools DPS, CVC and KVS decided to organize a fair for collecting money for helping the flood victims. They sold Handmade fans, Mats and plates from recycled material at a cost of â‚¹25, â‚¹ 100 and â‚¹50 each respectively. The number of articles sold are given as.