What does the multiplication of matrix represents?

In summary, matrix multiplication represents the consecutive application of two linear transformations or functions, where the first matrix takes a vector as its input and the second matrix produces a vector as its output. This is also known as mapping between vectors in different spaces.
  • #1
parshyaa
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As we know that 2×3 = 2+2+2 = 6;
so similarly what does matrix multiplication represents?
 
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  • #2
parshyaa said:
As we know that 2×3 = 2+2+2 = 6;
so similarly what does matrix multiplication represents?
It means the consecutive application of two linear transformations represented by the matrices.
 
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  • #3
Here's another explanation. A matrix can be thought of as a kind of function, one that takes a vector as its input, and produces another vector as its output. Multiplication of two matrices is equivalent to the composition of the functions that are represented by the matrices. I've explained this in terms of functions, but the usual terminology is linear transformations, mappings between vectors in one space to vectors in possibly a different space.
 
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1. What is the purpose of multiplying matrices?

The multiplication of matrices is used to combine the information from two matrices into a single matrix. This allows for more complex calculations and transformations.

2. How is matrix multiplication different from regular multiplication?

Matrix multiplication involves multiplying corresponding elements of two matrices and then summing the products. This is different from regular multiplication which involves multiplying two numbers together.

3. What does the resulting matrix represent?

The resulting matrix represents the combination of the information from the two original matrices. It can represent a transformation or a new set of data.

4. Can any two matrices be multiplied together?

No, in order for two matrices to be multiplied together, the number of columns in the first matrix must match the number of rows in the second matrix. This is known as the "dimensional requirement" for matrix multiplication.

5. Is matrix multiplication commutative?

No, matrix multiplication is not commutative, meaning that the order in which the matrices are multiplied matters. In other words, AB is not necessarily equal to BA when multiplying matrices.

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