🔷11 - Gauss Jordan Elimination and Reduced Row Echelon Form

[@clintonnavicha3465]

This is great and straight forward...keep up the good work brother...

[@SkanCityAcademy_SirJohn]

Thank you so much Clinton

[@siphosethundzo2650]

Sad part is that these things u work with are easy to understand but the activities I get at school are way to hard I try to do everything I just won’t get the answer but I’ll get there

[@SkanCityAcademy_SirJohn]

Yes please gradually.

[@siphosethundzo2650]

@@SkanCityAcademy_SirJohn can you help me with this one please bro 3x + 7y=21 2x + 2y + z=24 X + 3y=9

[@aS023_a]

Thanks it's so helpful 🙏 Keep it up bro

[@SkanCityAcademy_SirJohn]

Most welcome

[@PedroSiliezar-tv9qw]

You are the best!

[@SkanCityAcademy_SirJohn]

Thanks so much

[@NANTIMBAJOYCE]

Thanks sir, also help us with the Linear algebraic equations in matrix

[@SkanCityAcademy_SirJohn]

Great, do you mean solving the equations simultaneously??

[@simplyme0405]

Yes please ​@@SkanCityAcademy_SirJohn

[@AbibaChipura-uo9hu]

God bless you

[@SkanCityAcademy_SirJohn]

Thanks so much Abiba

[@lawrindaobokwaah7624]

Does it mean that i can use different approach to arrive at the same answer ? Like the adding and subtraction

[@SkanCityAcademy_SirJohn]

Yes, only if you are doing the right thing

[@GillAgainsIsland12]

Just one careless mistake ruins the whole salad.

[@SkanCityAcademy_SirJohn]

Of course 😂

[@simplyme0405]

The pain😂😂

[@AMOR_JULIET]

Thank you

[@SkanCityAcademy_SirJohn]

You are most welcome

[@ayo2975]

Please sir how do I know when to use row echelon form and reduced row echelon form?

[@SkanCityAcademy_SirJohn]

Row echelon form = Gaussian Elimination Reduced Row echelon form= Gauss Jordan

[@ayo2975]

@@SkanCityAcademy_SirJohnThank you sir

[@kirst6846]

For my first step, iI swapped R1 and R3 in order to put the [1 1 -2] in the first row, is there a problem with this?

[@SkanCityAcademy_SirJohn]

That's a smart move, thumbs up

[@andrewooi3648]

hello may i ask, is the final answer for x y and z is fixed?? i did manage to get all 0 and 1 in the respective slot but my answer for x y and z from your question is different

[@SkanCityAcademy_SirJohn]

Yes please, the values of x, y and z are fixed values. You might have missed something somewhere. Recheck okay... Good luck friend.

[@andrewooi3648]

@@SkanCityAcademy_SirJohn in the video 4:34, for R3= R1 -2 (R3), can i use R3= 2(R3) - R1 ???

[@SkanCityAcademy_SirJohn]

yes, you can@@andrewooi3648

[@andrewooi3648]

thank you, i will ask any question if needed @@SkanCityAcademy_SirJohn

[@SkanCityAcademy_SirJohn]

@andrewooi3648 ok

[@thusoramakobya7054]

Clear

[@SkanCityAcademy_SirJohn]

Thanks so much

[@Akuao_]

Is there a specific order to eliminate?

[@SkanCityAcademy_SirJohn]

As in? Can you explain further?

[@Akuao_]

How do you know which one to eliminate first . I don’t know if this helps

[@SkanCityAcademy_SirJohn]

@@Akuao_ so the key thing is to make the entries below the leading diagonals go to zero. 1. Perform the operation on row 2, using R1 and R2 2. Do same for row 3, using R1 and R3. 3. Then lastly you perform the operation on row 3 using row 2 and 3

[@SkanCityAcademy_SirJohn]

I hope you are cool with this?

[@kosionyeama3193]

Sir, in the second row, why didn't you use 3R3-R2 instead of R2-3R3?

[@SkanCityAcademy_SirJohn]

It doesn't make any difference

[@Akuao_]

Thank you for this video

[@SkanCityAcademy_SirJohn]

Thanks so much. May I know where you are watching me from?

[@Akuao_]

I’m in Florida, USA right now

[@SkanCityAcademy_SirJohn]

Wow that's great, and are you a Ghanaian 🇬🇭 or an American?

[@Akuao_]

@@SkanCityAcademy_SirJohn I’m both Ghanaian and American

[@SkanCityAcademy_SirJohn]

Oh okay. Nice

[@Maths103]

Meaning always when solving( 2:35 ) all the systems of linear equations using gaus jordan I always multiply the third row by 3 or how and where do I get the number that I multiply with?? Please sir help me🥺

[@Maths103]

This is on how I get my first zero on the second row now, I’m confused on where and how the number to multiply the 3rd row is got Which number from the system do I use to multiply with 🤷‍♀️🤷‍♀️🤷‍♀️

[@SkanCityAcademy_SirJohn]

@Greatness Well, it depends on the question. But these steps could help. so the key thing is to make the entries below the leading diagonals go to zero. 1. Perform the operation on row 2, using R1 and R2 2. Do same for row 3, using R1 and R3. 3. Then lastly you perform the operation on row 3 using row 2 and 3

[@SkanCityAcademy_SirJohn]

Where do you school?

[@Maths103]

@@SkanCityAcademy_SirJohn I’m a university scholar

[@Maths103]

@@SkanCityAcademy_SirJohn I’m lost? To performing the operations on row two, I got so confused when I was trying to solve this other question and I’m not getting a zero after using a second row operation Like how you stated

[@meserettesfaye1433]

3x+2y-z=5 x-y+3z=-15 2x+y+7z=-28 how calculate both rule please

[@SkanCityAcademy_SirJohn]

Chat me here: telegram [phone]

[@Akuao_]

I have a problem with a question I’m working on. Is there a way I could reach out to you?

[@SkanCityAcademy_SirJohn]

On this same Gaussian Elimination ?

[@Akuao_]

Yes

[@SkanCityAcademy_SirJohn]

@@Akuao_ kindly join my telegram group for engineers on my page, and message me directly (group) owner.

[@kamalbhatta9559]

❤❤

[@SkanCityAcademy_SirJohn]

Thanks so much for the much love

[@mensahbenjaminrabby3303]

❤

[@okoyengozi6696]

I taught you always use r1 and r2, and r1 and r3 instead of r2 anf r3

[@SkanCityAcademy_SirJohn]

You can use r2 and r3 for the 2nd forward elimination step

[@AyakAkuei-kj2on]

More appropriation

[@meserettesfaye1433]

3x+2y-z=5 x-y+3z=-15 2x+y+7z=-28 how calculate both rule please

[@MarvellousOmamujevwe]

❤