Properties of Matrix Multiplication

# Properties of Matrix Multiplication Video Lecture | Mathematics (Maths) Class 12 - JEE

## Mathematics (Maths) Class 12

204 videos|288 docs|139 tests

## FAQs on Properties of Matrix Multiplication Video Lecture - Mathematics (Maths) Class 12 - JEE

 1. What is matrix multiplication?
Ans. Matrix multiplication is a binary operation that takes two matrices and produces a new matrix. It involves multiplying the corresponding elements of the matrices and summing them up to obtain the values in the resulting matrix.
 2. What are the properties of matrix multiplication?
Ans. Matrix multiplication possesses several important properties, including: - Associativity: (A * B) * C = A * (B * C), where A, B, and C are matrices of compatible dimensions. - Distributivity: A * (B + C) = (A * B) + (A * C), where A, B, and C are matrices of compatible dimensions. - Identity: A * I = I * A = A, where A is a matrix and I is the identity matrix of compatible dimensions. - Non-commutativity: In general, A * B ≠ B * A, meaning that the order of multiplication matters. - Zero matrix: A * 0 = 0, where A is a matrix and 0 is the zero matrix of compatible dimensions.
 3. How do you determine if two matrices can be multiplied?
Ans. For two matrices to be multiplied, the number of columns in the first matrix must be equal to the number of rows in the second matrix. If the dimensions do not satisfy this condition, the matrices cannot be multiplied.
 4. What is the role of the dimensions of matrices in matrix multiplication?
Ans. The dimensions of matrices determine whether or not they can be multiplied and what the resulting dimensions of the product matrix will be. The number of columns in the first matrix must match the number of rows in the second matrix. The resulting matrix will have the same number of rows as the first matrix and the same number of columns as the second matrix.
 5. Can matrix multiplication be applied to matrices of any size?
Ans. No, matrix multiplication is only defined for matrices where the number of columns in the first matrix matches the number of rows in the second matrix. The resulting matrix will have dimensions based on the number of rows in the first matrix and the number of columns in the second matrix.

## Mathematics (Maths) Class 12

204 videos|288 docs|139 tests

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