Question 2 [1 point} Conceptually, matrix multiplication .3 is linked to hadamard products {3. determines the length of a vector 0 is linked to dot products C. gives the determinant of a matrix C. is linked to scalar multiplication Problemset Question 3 {1 point} Eigenvectors O |Can determine the long term behavior of a system {3. Don't change direction if multiplied by a matrix {3. Don't change length if multiplied by a matrix .0 Both answer 1 & answer 2 {3. Both answer 1 & answer 3 Question 4 {1 point} Matrices can be used to represent {3. Transformations of data {operations} only .3 Strings of characters only .3 A mix of strings and numbers {3. Data only {3. Both data and transformations of data {operations} Question 14 (1 point) Matrix-multiplying a 2D matrix representing data with an orthogonal matrix results in a Contraction of the data matrix I: _:;I Expansion of the data matrix Rotation of the data matrix If :;I Unchanged data matrix I:" ":I Stretching of the data matrix Question 15 (1 point) The SVD factors any matrix uniquely into If 1 orthogonal matrix and 2 diagonal matrices I: _::I 1 identity matrix and 1 Hermitian matrix 1 orthogonal matrix and 1 diagonal matrix I: :;I 1 upper and 1 lower diagonal matrix 2 orthogonal matrices and 1 diagonal matrix