TI84 TI83 RREF Solving Linear Systems

Learn how to use row reduced echelon form (rref) on your TI84 or TI83 Graphing Calculator to solve systems of linear equations. We discuss how to write an augmented matrix given a system of 3 equations with 3 variables. We discuss step by step how to input the augmented matrix, select the row reduced echelon form of the matrix, and interpret the result as well as how to write the solution.

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00:00 Intro
0:22 How to Write an Augmented Matrix Given Equations
1:00 How to Input Matrix on your Calculator
1:37 Important Step to Remember
1:39 Menu to Identify RREF
2:17 Interpret Results
2:37 How to Write the Solution
2:43 How to Check Your Solution

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[AoNti_]

Bro I’ve been stressed out on a question bc I forgot how to put in in the calculator, but thx to ur vid I’m saved

[jonatan]

Thank you so much for sharing this video! I'm taking a Finite Math course this summer, and the professor only taught us to do it by hand. I learned it, but it's so time-consuming. Knowing how to do this in 30 seconds rather than 10 minutes is such a blessing! God bless you, sir!

[Bigpaa]

Linear Algebra is one of those topics that is super easy to learn but just insanely tedious. When you are able to throw these problems into a machine (calculator) you eliminate the chance of simple addition and multiplication error and you save tons of time.

I try to focus more on learning the concepts of linear algebra rather than becoming an expert of doing it by hand. Knowing the concepts has proved far more helpful in my engineering degree.

[samqueen]

I'm about to take my linear algebra final. You saved my life. I wish that I knew about this earlier

[patrickmayer]

We've been using an online RREF program, but we obviously can't use that on the exam. Thanks for the straight-to-the-point video, Mario!

[joestrauch]

its been over a month and my teacher skips that part everytime and he does it by head and doesnt know how to on the calc!

[ReidCipriani]

Very helpful. It's important to know how to do ref and rref by hand but for me personally it take a lot of trial and error. The calculator makes it such a breeze.

[matthewmonter]

Thank you so much for this video, it has been the only one so far to be able to tell me what i needed!

[JediJesus]

GOD BLESS YOU, YOU SAVED NY LIFE FROM A BAD LOOK FROM MY TEACHER

[alexanderbaron]

Thanks Mario, as always really straight forward!

[MrJamieJam]

Oh my god you just saved my life 😭😭😭 thank you

[patrickhanlon]

watching this the week before finals, i cannot believe how easy this was. I'm kicking myself for not googling this sooner, damn

[joyouswonders]

Why can I only view the first 5 chapters? I would very much like to see the last 3 as this seems very informative. At around 2:07 it just stops right in the middle of a sentence. I can see that it is really 3:19 long.

[billygraham]

Does the calculator always work with "augmented matrices?" Is that automatic?

[poyrazkarayel]

How did you put the negative sign i tried to that and it didn't work

[coleschreiner]

what would I type if one of the Y's was (2/y) ?

[nomicgames]

Will there ever be more than 2 numbers in each row while viewing the solution.

[vishalthakwani]

I cant put negative values in the matrix in my calculator, pls help exam on monday

[kotooriiii]

How do I know if the matrix has no solution, will it tell me?

[philxina]

how do I switch the equation into a fraction