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Class 12 Matrices · Conceptual Answer1 Marksmatrix_multiplication

Class 12 Maths · Matrices · Conceptual Answer #37

If \(\begin{bmatrix}1 & 2\\3 & 4\end{bmatrix}\)\(\begin{bmatrix}3 & 1\\2 & 5\end{bmatrix}\)=\(\begin{bmatrix}7 & 11\\k & 23\end{bmatrix}\), find k.

✅ Step-by-Step Solution

Final Answer: 17
  1. The (2,1) entry of the product is 3·3+4·2=17; equality requires k=17.
  2. 17

📋 CBSE Stepwise Marking Scheme

  • [0.5 marks] The (2,1) entry of the product is 3·3+4·2=17; equality requires k=17.
  • [0.5 marks] 17

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