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Questions and Answers
What is the condition for a square matrix to be symmetric?
What is the condition for a square matrix to be symmetric?
- It is equal to its transpose (correct)
- It has only one row
- Its determinant is zero
- It has only one column
What type of matrix has all elements equal to zero?
What type of matrix has all elements equal to zero?
- Diagonal matrix
- Design matrix
- Null or zero matrix (correct)
- Scalar matrix
What is a design matrix used for?
What is a design matrix used for?
- To find the determinant of a matrix
- To perform matrix operations
- To store data about multiple characteristics (correct)
- To find the inverse of a matrix
What is the result of matrix-scalar multiplication?
What is the result of matrix-scalar multiplication?
What is the primary way computers interact with data in practice?
What is the primary way computers interact with data in practice?
How are matrices added or subtracted?
How are matrices added or subtracted?
What is the term for a matrix with the number of rows not equal to the number of columns?
What is the term for a matrix with the number of rows not equal to the number of columns?
What is the Hadamard product of two matrices A and B?
What is the Hadamard product of two matrices A and B?
What is the characteristic of an identity matrix?
What is the characteristic of an identity matrix?
What is the result of multiplying each element of a matrix A by a scalar 𝜶?
What is the result of multiplying each element of a matrix A by a scalar 𝜶?
What is the characteristic of a diagonal matrix?
What is the characteristic of a diagonal matrix?
What type of matrix has elements above the main diagonal equal to zero?
What type of matrix has elements above the main diagonal equal to zero?
What is the term for a matrix with the number of rows equal to the number of columns?
What is the term for a matrix with the number of rows equal to the number of columns?
What is the condition for two matrices to be equal?
What is the condition for two matrices to be equal?
What is the trace of a matrix A?
What is the trace of a matrix A?
What is a symmetric matrix?
What is a symmetric matrix?
What is the determinant of a 2×2 matrix [[a, b], [c, d]]?
What is the determinant of a 2×2 matrix [[a, b], [c, d]]?
What is the minor of a matrix obtained by removing the row and column associated with the indices i and j?
What is the minor of a matrix obtained by removing the row and column associated with the indices i and j?
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