1.The total number of matricesA=(02y12xy−12x−y1),(x,y∈R, xy≠0)A = \begin{pmatrix} 0 & 2y & 1 \\ 2x & y & -1 \\ 2x & -y & 1 \end{pmatrix}, \quad (x, y \in \mathbb{R}, \; xy \neq 0)A=02x2x2yy−y1−11,(x,y∈R,xy=0)for which ATA=3I3A^{T} A = 3 I_{3}ATA=3I3 is:a.666b.333c.444d.222Login to continueOnly logged in users canattempt or see the solution.
