SOLUTION: Subscript notation is frequently used for working with larger systems of equations. Use a matrix approach to solve the system. Express the solutions as 4-tuples of the form (x1,

Algebra ->  Equations -> SOLUTION: Subscript notation is frequently used for working with larger systems of equations. Use a matrix approach to solve the system. Express the solutions as 4-tuples of the form (x1,       Log On


   

Question 1122833: Subscript notation is frequently used for working with larger systems of equations. Use a matrix approach to solve the system. Express the solutions as 4-tuples of the form
(x1, x2, x3, x4).
x1 − 3x2 − 2x3 + x4 = −4
−2x1 + 7x2 + x3 − 2x4 = −2
3x1 − 7x2 − 3x3 + 3x4 = −5
5x1 + x2 + 4x3 − 2x4 = 20
(x1, x2, x3, x4) =



Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
You can do this for the practice and to learn how to do it.
I don't need the practice.
Or, you can use an online site to get the answer.

Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

Go to the site https://matrix.reshish.com/gauss-jordanElimination.php .

Find there free of charge online solver for matrix equations.

Input your extended matrix into the solver.

Then press the "Solve" button.

You will get the solution.