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प्रश्न
उत्तर
\[AB = \begin{bmatrix}2 & 4 & - 1 \\ - 1 & 0 & 2\end{bmatrix}\begin{bmatrix}3 & 4 \\ - 1 & 2 \\ 2 & 1\end{bmatrix}\]
\[ \Rightarrow AB = \begin{bmatrix}6 - 4 - 2 & 8 + 8 - 1 \\ - 3 - 0 + 4 & - 4 + 0 + 2\end{bmatrix}\]
\[ \Rightarrow AB = \begin{bmatrix}0 & 15 \\ 1 & - 2\end{bmatrix}\]
\[ \Rightarrow \left( AB \right)^T = \begin{bmatrix}0 & 1 \\ 15 & - 2\end{bmatrix}\]
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संबंधित प्रश्न
Compute the indicated product.
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, then show that A2 = B2 = C2 = I2.
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For the following matrices verify the associativity of matrix multiplication i.e. (AB) C = A(BC):
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(A − B)2 ≠ A2 − 2AB + B2
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If A and B are square matrices of the same order, then [k (A – B)]′ = ______.
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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 Rs. 25, Rs.100, and Rs. 50 each respectively. The numbers of articles sold are given as
| School/Article | DPS | CVC | KVS |
| Handmade/fans | 40 | 25 | 35 |
| Mats | 50 | 40 | 50 |
| Plates | 20 | 30 | 40 |
Based on the information given above, answer the following questions:
- What is the total money (in Rupees) collected by the school DPS?
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 Rs. 25, Rs.100, and Rs. 50 each respectively. The numbers of articles sold are given as
| School/Article | DPS | CVC | KVS |
| Handmade/fans | 40 | 25 | 35 |
| Mats | 50 | 40 | 50 |
| Plates | 20 | 30 | 40 |
Based on the information given above, answer the following questions:
- What is the total amount of money (in Rs.) collected by schools CVC and KVS?
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 Rs. 25, Rs.100, and Rs. 50 each respectively. The numbers of articles sold are given as
| School/Article | DPS | CVC | KVS |
| Handmade/fans | 40 | 25 | 35 |
| Mats | 50 | 40 | 50 |
| Plates | 20 | 30 | 40 |
Based on the information given above, answer the following questions:
- How many articles (in total) are sold by three schools?
