Questions tagged 'Matrices'
3 questions
Find the value for k for which the matrix?
Find the value of k for which the matrix A = (\begin{pmatrix} -3 & -6 & -18 \ 2 & -9 & -14 \ -8 & 3 & k \end{pmatrix}) has a rank of 2. What is the value of k?
Squared Matrix to get a negative identity matrix?
Title: Can a Squared Matrix Result in a Negative Identity Matrix? Body: Consider the existence of 2 × 2 matrices A such that A² = −I₂. For instance, if A = (\begin{pmatrix} 0 & -1 \ 1 & 0 \end...
what is the additive identity for 2 x 4 matrices?
What is the additive identity for 2 x 4 matrices? a. [1 1 1 1] [1 1 1 1] b. [-1 -1 -1 -1] [-1 -1 -1 -1] c. [0 0 0 0] [0 0 0 0] d. [1 1 1 1] [0 0 0 0]