The matrix A is idempotent if:

Related MCQs

• If A is a 3 × 2 matrix, B is a 2 × 3 matrix, C is a 2 × 2 matrix and D is a 3 × 3 matrix, then which of the following products does not exist?
• Matrix obtained by inter changing the rows and columns is called ………… of a matrix
• An adjoint matrix is the ……………… of the cofactor matrix.
• A matrix with equal number of rows and columns is called:
• A square matrix in which all elements except those in diagonal are zero are called:
• A diagonal matrix with all its diagonal elements equal to 1 is known as:
• A matrix in which every element is zero is called
• The determinant of matrix =4 6 3 8 is:
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• Transpose of a column matrix is