Vectors and Matrices

1. Jan 23, 2006

DethRose

i have a question where i had to multiply to matrices:

2 -3
-3 and 2 i came up with the answer as -12 but then the question says:

sketch the vectors together in the xy plane.

what do they mean when they say this and how do you do it

thanks

2. Jan 23, 2006

neurocomp2003

a vector is represented as (x0,x1,x2....,xn-1,xn)
if the vector is said to be a spatial vector than we associate them with
our terminology for spatial coordinates...which usually is xyz OR ei,ej,ek OR uvn(sometimes called cartesian or euclidean)

now to draw a vector means to draw a from O to the coordinates of that vector...
to draw a vector summation means to draw both vectors than translate one of them
vector scalar multiplication... means to resize the vector...
...
however if your askinghow to draw a matrix...i've never heard of such a thing...so my only guess would be to draw each columnwise vector or each rowwise vector.