Question

can someone help me on this matrix, what is the answer please?

Answer 1

if A=\[\left[\begin{matrix}-4 & 5 \\ -2 & 5/2\end{matrix}\right]\]

find a non-zero 2 by 2 matrix X such that
A·X = O2x2


O2x2 is the 2 by 2 zero matrix.

Answer 2

i remember this one :)

Answer 3

flip your left for rights and negate one side

Answer 4

thought i rememberd it , gonna have to go back and recall what I did :)

Answer 5

http://www.wolframalpha.com/input/?i=%7B%7B-4%2C5%7D%2C%7B-2%2C5%2F2%7D%7D.%7B%7B-5%2C-5%2F2%7D%2C%7B-4%2C-2%7D%7D

Answer 6

its a counterclockwise rotation and negate the right side stuff ....

Answer 7

\[\begin{pmatrix}a&b\\c&d\end{pmatrix}.\begin{pmatrix}-b&-d\\a&c\end{pmatrix}=0\]

Answer 8

should work with sime scaled version of it as well

Answer 9

with some ....