Find x and y so A^2 = A
If A = x 4
(^^^^ that is a 2x2 matrix)
determine the values of x and y for which A^2=A.
No idea how to start this one.
i didnt think it was possible because
A^2 = x^2 16
A = x 4
so how can A^2 ever equal A because no matter what the x and y values are, 4 and 7 will never equal 16 and 49?
Help please :)
The first thing you should do is review how to multiply matrices. Because A^2 is NOT equal to what you got. Note: .
Originally Posted by mybrohshi5
Duh haha thank you. its getting late here and i shouldnt be doing math when im tired. i always forget little things like that.
thank you again.