I don't think this intended a matrix made of a single vector. Rather, they want a single equation (which happens to be a "vector-matrix" equation) rather than three equations.
And that would be
.
So I'm given this question.
and it says Forumlate a single vector matrix equation from the three equations given.
Sounds pretty obvious but a single vector matrix would just be
|x| = |3|
|y| = |1|
|z| = |1|
Sorry I can't figure out how to set the proper array brackets and stuff. But that is the single matrix vector?
Here is a correct inverse matrix of the matrix you formulated obove.
1 -1 -1.5
0.5 0 -1
-1 1 2
Sorry about the formatting lol. I think I'm missing a step though because I have to show that this matrix is a correct inverse of the matrix I created obove, but the matrix I created was just a single vector??
oh right yeh that makes a lot more sense now. Thanks.
@Plato, I can verify that the second part of the question is true. It says show that the following matrix is a correct inverse of the matrix obove.
by using an indentiy matrix so multiplying that matrix by the identity matrix should return . ?
What the freak! I know how to calculate a matrix but for some reason when I'm doing it manually
but I end up with 8 for the first position wtf...?
4 x 1 + 2 x 0.5 + 4 x -1 = 8? but it should equal 1?
when I use the online calculator it comes out as
So what is going on?