Use the​ Gauss-Jordan method to solve the following system of equations.

nitraiddQ

nitraiddQ

Answered question

2021-09-22

Use the​ Gauss-Jordan method to solve the following system of equations.
3x4y+4z=10
3x+5yz=15
12x7y+11z=45
Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.
A. The solution is ( _ , _ ,_ ) in the order​ x, y, z. ​(Simplify your​ answers.)
B. There is an infinite number of solutions. The solution is ( _ , _, _ ) where z is any real number. ​(Simplify your answers. Use integers or fractions for any numbers in the​ expressions.)
C. There is no solution.

Answer & Explanation

cheekabooy

cheekabooy

Skilled2021-09-23Added 83 answers

Step 1
3x4y+4z=10
3x+5yz=15
12x7y+11z=45
Step 2
By using Gauss-Jordan method solve the system of equations as follows.
(34410351151271145)=(14343103351151271145)(r1=r13)
=(1434310309551271145)(r2=r23r1)
=(1434310309550955)(r3=r312r1)
=(143431030159590955)(r2=r29)
Step 3
On further simplification,
(34410351151271145)=(101627110270159590955)(r1=r1+4r23)
=(101627110270159590000)(r3=r39r2)
Step 4
From the above calculation there are infinitely many solutions.
Let z is a real number so, x=110271627z and y=59(1+z)
Therefore, the solution of the given system of equation is (110271627z,59(1+z),z).

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