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  • Please Solve RD Sharma Class 12 Chapter Algebra of Matrices Exercise 4.1 Question 18 Maths Textbook Solution.

Please Solve RD Sharma Class 12 Chapter Algebra of Matrices Exercise 4.1 Question 18 Maths Textbook Solution.

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Answer:  A=\begin{bmatrix} 5 &3 & 4\\ 7 &2 &3 \end{bmatrix}

and          B=\begin{bmatrix} 8 &7 & 6\\ 10 &5 &7 \end{bmatrix}  

Given: Here the sales figure of two car dealers during January 2013 

            Here we have to write 2\times 3  summarizing sales data.

Hint: Simply summarize for dealer A and dealer B

Solution:   Given data is

For January 2013:

\begin{matrix} &Delux & Premium & Stadard\\ dealer A & 5 & 3& 4\\ dealerB &7 & 2 & 3 \end{matrix}

Hence, A=\begin{bmatrix} Delux &Premium &Standard \\ 5& 3 & 4\\ 7 &2 &3 \end{bmatrix}

And For January – February:

\begin{matrix} & Deluxe &Premium & Stadard\\ dealerA & 8 & 7& 6\\ dealerB &10 & 5 & 7 \end{matrix}

Hence, B=\begin{bmatrix} &Deluxe &Premium &Stadard \\ dealerA & 8 &7 &6 \\ dealerB & 10 &5 & 7 \end{bmatrix}

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