Matrix Space, dependence/indepence (HELP)

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SUMMARY

The discussion focuses on determining the linear independence or dependence of a set of three 2x2 matrices in the space M2,2. The matrices provided are: Matrix 1: [[1, 4], [-1, 3]], Matrix 2: [[-1, 5], [6, 2]], and Matrix 3: [[1, 13], [4, 7]]. To analyze their independence, the user must set up the equation r1M1 + r2M2 + r3M3 = 0, where the right side represents the zero matrix. The solution involves forming a linear system and performing row reduction to check for trivial solutions.

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  • Basic understanding of the zero matrix and its role in linear equations.
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Homework Statement



Is this set of 2x2 matrices linearly independent or dependent in M2,2 (the space of 2x2 matrices)

Matrix 1 (2x2)
[ 1 4 ]
[ -1 3 ]

Matrix 2 (2x2)
[ -1 5]
[ 6 2]

Matrix 3 (2x2)
[ 1 13]
[ 4 7]

The Attempt at a Solution



I know that I need to set r1M1 + r2M2 + r2M3 = 0

and then make some equations = 0
then put those in a matrix
make that matrix part of a linear system
do row reduction
if trivial solutions exist then it's independent
if trivial solutions don't existI HAVE NO CLUE HOW TO DO THE FIRST STEP THOUGH, never seen an example with matrices. HELP!
 
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You know that a constant times a matrix multiplies each element of the matrix, right?

And in your equation r1M1 + r2M2 + r3M3 = 0 the zero in the right side is the zero matrix, right? So write out the matrix equation you get and equate the elements.
 
lol
thanks!
 

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