Solving Vector & Matrix Multiplication: Sketching in XY Plane

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SUMMARY

The discussion centers on the multiplication of two matrices, specifically the matrices [[2, -3], [-3, 2]]. The user initially calculated the product as -12, but the task required sketching the resulting vectors in the XY plane. It is clarified that vectors are represented in spatial coordinates, typically as (x0, x1, x2, ..., xn-1, xn), and to sketch a vector, one must draw it from the origin (O) to its coordinate point. The conversation also touches on vector summation and scalar multiplication, emphasizing the need to visualize vectors rather than matrices directly.

PREREQUISITES
  • Understanding of matrix multiplication
  • Familiarity with vector representation in spatial coordinates
  • Knowledge of vector summation and scalar multiplication
  • Basic skills in sketching geometric representations in the XY plane
NEXT STEPS
  • Learn about visualizing vectors in the XY plane using software like GeoGebra
  • Study the properties of matrix multiplication in linear algebra
  • Explore vector operations, including addition and scalar multiplication
  • Investigate the concept of vector spaces and their applications in physics
USEFUL FOR

Students and educators in mathematics, particularly those studying linear algebra, as well as professionals in fields requiring geometric interpretations of vectors and matrices.

DethRose
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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
 
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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.
 

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