Question

Gaussian Elimination. Please see attached.

Answer 1

I am struggling with this and I believe my answer for y and z are correct but I need to solve for x and check this by putting that back into the equation. This is what I am unsure what to do and any help would be much appreciated.

Answer 2

y is wrong

Answer 3

22y -2z = -27

Answer 4

\( y = \dfrac{-27 +2z}{22}\) ,
replace \(z = \dfrac{5}{4}\) you will get the correct answer for y , then for x

Answer 5

that = -1.113636

Answer 6

One more thing, you should label how to get the last matrix. I know you use \(2R_1+R_3\), but if you don't state it out, the credit may be took off.

Answer 7

Ok, but should let it as fraction -49/44 , and plug to the first equation to get x

Answer 8

x-4y +z= 5
x = 5 +4y-z
dat sit.

Answer 9

thank you

Answer 10

np