Two matrices A and B are multiplied to get AB if:Question 29Answera.No. of rows of A is equal to no. of columns of B.b.None of these.c.Both are rectangular.d.Both have same order.

Matrix A has 3 rows and 2 columns. Matrix multiplication AB cannot be done if matrix B hasa.2 rows and 1 columnb.2 rows and 3 columnsc.3 rows and 3 columnsd.2 rows and 4 columns

[a b c] is a:Question 4Answera.Row matrix.b.Diagonal matrix.c.Column matrix.d.Zero matrix.

Suppose that A and B are n×n matrices. Check the true statements below: A. If det(A) is zero, then two rows or two columns are the same, or a row or a column is zero.B. det(AT)=(−1)det(A)C. If two row interchanges are made in sucession, then the determinant of the new matrix is equal to the determinant of the original matrix.D. The determinant of A is the product of the diagonal entries in A

Define the matrices A=\left[\begin{array}{ccc} 2&3\\ {1}&{-5}\end{array}\right] and B=\left[\begin{array}{ccc} 4&3&6\\ {1}&3.9&3\end{array}\right]. What is the entry in the first row and second column of AB?

If AB = BA = I, what can be said about matrices A and B? a. They are transposes of each other. b. They are inverses of each other. c. They are symmetric. d. They are singular.