Mathematics: 25and walk solve the system using an augmented matrix. -x-3y=-17 2x-6y=-26 can someone explain what i am supposed to do in this problem?

25and walk solve the system using an augmented matrix.

Ответ:

brutcherk

31.12.2021

Ok so
same as normal matrix except you have a line in place of the equals
just take the coefients and use gausian ellimination

-1x-3y=-17 and
2x-6y-26 translates to
$\left[\begin{array}{ccc}-1&-3&|-17\\2&-6&|-26\end{array}\right]$
now use gausian elimination
multiply top row by 2 and add to 2nd collumn

$\left[\begin{array}{ccc}-1&-3&|-17\\0&-12&|-60\end{array}\right]$
divide bottom row by -12
$\left[\begin{array}{ccc}-1&-3&|-17\\0&1&|5\end{array}\right]$
now multiply last row by 3 and add to first row
$\left[\begin{array}{ccc}-1&0&|-2\\0&1&|5\end{array}\right]$
times top row by -1
$\left[\begin{array}{ccc}1&0&|2\\0&1&|5\end{array}\right]$
x=2
y=5

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Ответ:

gabbypittman20

05.09.2022

Mathematics

J = N (angle)[alternate angle]

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25and walk
solve the system using an augmented matrix.
-x-3y=-17
2x-6y=-26
can someone explain what i am supposed to do in this problem?

Ответ:

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