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  • Please Solve RD Sharma Class 12 Chapter 4 Algebra of Matrices Exercise Very Short Asnwer Question 58 Maths Textbook Solution.

Please Solve RD Sharma Class 12 Chapter 4 Algebra of Matrices Exercise Very Short Asnwer Question 58 Maths Textbook Solution.

Answers (1)

Answer: x=2

Hint: Here we use basic multiplication algebric matrix’s concept

Given: \begin{bmatrix} x &1 \end{bmatrix}\begin{bmatrix} 10& -20 \end{bmatrix}=0  find x

Solution:

Here 1st matrix has 2 columns and 2nd matrix has 2 rowsSo, multiplication is possible

\begin{bmatrix} x &1 \end{bmatrix}\begin{bmatrix} 10& -20 \end{bmatrix}=0\begin{bmatrix} x\times 1+\left ( -2 \right )0 +0 \end{bmatrix}=0\begin{bmatrix} x -20 \end{bmatrix}_{1\times2}=\begin{bmatrix} 0 &0 \end{bmatrix}_{1\times2}\begin{bmatrix} x & -20 \end{bmatrix}=0x-2=0x=2

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