Compute the Frobenius norm ∥A∥F=∑i,j∣aij∣2\|A\|_F = \sqrt{\sum_{i,j} |a_{ij}|^2}∥A∥F=∑i,j∣aij∣2 of the matrix A=(2−1013−2)A = \begin{pmatrix} 2 & -1 & 0 \\ 1 & 3 & -2 \end{pmatrix}A=(21−130−2).
18\sqrt{18}18
19\sqrt{19}19
20\sqrt{20}20
24\sqrt{24}24