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.
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!!!
It’s going down a straight line, you’re essentially removing the variables and writing then down in a matrix like how they were lined up. As seen in the video
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 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 ^_^
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
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)?
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
