Solution: Solve Gaussian Elimination | 2x1 + 1x2 = 4

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Homework Help Overview

The discussion revolves around solving a system of equations using Gaussian elimination, specifically focusing on the matrix representation of the equations.

Discussion Character

  • Exploratory, Problem interpretation

Approaches and Questions Raised

  • Participants discuss strategies for eliminating variables in the matrix, with one suggesting a specific row operation to simplify the system. There is also a mention of personal challenges with mastering the technique.

Discussion Status

Some participants have offered partial guidance on approaches to take, while others express a need for clarification and support. The conversation reflects a mix of attempts and shared experiences rather than a clear consensus on a method.

Contextual Notes

One participant notes that the textbook explanation is lacking, indicating a potential gap in understanding the material.

TonyC
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2 1 1 | 4
-1 2 1 | 3
7 6 5 | 19

Need a little help please
 
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Im not going to do the whole thing, but I like to try and eliminate the stuff below the top left number first.

Say, R3+7R2, will get rid of the -7. And will make the bottom row 0 20 12 | 40, id then divide by 2. Makes things easier. Then move onto another number.

I used to really suck at this, it takes a lot of goes before you can do it without trouble.
 
Im not going to do the whole thing, but I like to try and eliminate the stuff below the top left number first.

Say, R3+7R2, will get rid of the -7. And will make the bottom row 0 20 12 | 40, id then divide by 2. Makes things easier. Then move onto another number.

I used to really suck at this, it takes a lot of goes before you can do it without trouble.
 
Thank you, the book doesn't explain to good and I just needed a jump start.
 

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