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Types of Matrices - Matrices and Determinants, Business Mathematics & Statistics Video Lecture | Business Mathematics and Statistics - B Com

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FAQs on Types of Matrices - Matrices and Determinants, Business Mathematics & Statistics Video Lecture - Business Mathematics and Statistics - B Com

1. What are the different types of matrices?
Ans. There are several types of matrices, including: - Square Matrix: A matrix with an equal number of rows and columns. - Rectangular Matrix: A matrix with a different number of rows and columns. - Diagonal Matrix: A square matrix where all the elements outside the main diagonal are zero. - Identity Matrix: A square matrix with ones on the main diagonal and zeros elsewhere. - Zero Matrix: A matrix where all the elements are zero.
2. How are square matrices different from rectangular matrices?
Ans. Square matrices have an equal number of rows and columns, whereas rectangular matrices have a different number of rows and columns. Square matrices have more symmetry and properties compared to rectangular matrices.
3. What is a diagonal matrix and what are its properties?
Ans. A diagonal matrix is a square matrix where all the elements outside the main diagonal are zero. The main diagonal is the line of elements from the top-left to the bottom-right of the matrix. The properties of a diagonal matrix include: - The determinant of a diagonal matrix is equal to the product of its diagonal elements. - The inverse of a diagonal matrix is obtained by taking the reciprocal of its diagonal elements. - Multiplying a diagonal matrix by a scalar is equivalent to multiplying each diagonal element by that scalar.
4. What is an identity matrix and what are its properties?
Ans. An identity matrix is a square matrix with ones on the main diagonal and zeros elsewhere. The main diagonal elements are located from the top-left to the bottom-right of the matrix. The properties of an identity matrix include: - Multiplying any matrix by an identity matrix results in the original matrix. - The product of an identity matrix and any matrix is equal to the original matrix. - The determinant of an identity matrix is always equal to 1.
5. What is a zero matrix and what are its properties?
Ans. A zero matrix is a matrix where all the elements are zero. It can be of any size, including square or rectangular matrices. The properties of a zero matrix include: - Adding a zero matrix to any matrix does not change the original matrix. - The product of any matrix and a zero matrix is always a zero matrix. - The determinant of a zero matrix is always zero.
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