Using the TI-84 to solve systems of equations with 3 variables 

Thank you very much. I am taking a fast-paced finite math course and I was stuck on this type of problem for several hours. I decided to go to bed and try in the morning. Yours was the second video that came up when I searched, and it worked/explained perfectly.

you just saved my life

This should be a 3x4 matrix that has what the equations are equal to. I honestly think this video only teaches people how to take a long and unnecessary route to increase their chances of bombing a pre-calc test. matrix a =5,3,2,2 2,1,-1,5 1,4,2,16 rref([A]) 1,0,0,-2 0,1,0,6 0,0,1,-3 x,y,z x=-2 y=6 z=-3

Thanks so much. My instructor for my math course is not a very good teacher, she s a wonderful person, but her videos are so confusing. I appreciate you taking this step by step and added the little steps on the calculator. I understand now. God bless

OMG, this makes it so much easier by doing this. Thank you!

Thanks it’s very useful , I just have one note about the solution in your pc, the answer of the matrix is: (-2,6,-3) not (-2,6,+3) the last number in the answer’s matrix is -3 instead +3. Thanks again for you explain ^_^

Thank you so much! This helped me out so much with my math homework.

wouldnt it be a 3 by 4? you include the answer of each variable...

This is clutch. Thank you so much

Only 3x3? 5x5, not?

Great video thanks

any idea what i could be doing wrong? when hitting x^-1 and enter i keep getting the error singular matrix. edit: so no idea why but on a different problem this worked just fine. idk what it was about the other one it did have 3 solutions when i did it by hand

Super video. Easy to understand!

I literally love you 😂

¡Muchas gracias por este video! Best one on RU-vid! :))))

thanks you!! perfectly explained

thank you

I keep getting ERR: INVALID DIM

Sir thank you so much I truly appreciate all you do again thank you

That was amazing thank u

tysm my teacher put down an explanation and it was completely wrong

Life saver

Thank you so much

thank you so much!!

Why did you have to take the inverse of matrix A when you typed: (A^-1*B)? What do the set of answers mean when we don't take the inverse of the two matrix's and just type in: (A*B)?

Thank you

Thanks!!

You are amazing

If I could give you a million likes, I would!

Thanks

It seem like that there's a trivial hiccup of the final solution in your powerpoint here(since the solution in your calculator is (-2,6,-3), not (-2,6,3)). But it doesn't matter, thanks for your sharing!!!

thank

How do you know which number belongs to which variable

THANK YOOOOOUUUUUUU!!!

GOAT

You just saved my IB

Urgent please!!! How can I solve these equations: X+Y+Z=4 X^2+Y^2+Z^2=14 X^3+Y^3+Z^3=34

You saved me

I love you

Update your OS.

count the number of OKs :) ok?

i’m a junior in high school, just regular class too, no honors, no ap, why are people in college doing this 🥲