Posted by Drake on Wednesday, June 1, 2016 at 6:32am.
Consider the system of equations:
x1 + x2 + x3 = 6,
−x1 − 2x2 + 3x3 = 1,
3x1 − 4x2 + 4x3 = 5.
(a) Write down the augmented matrix for this system
(b) Use elementary row operations to reduced the augmented matrix to reduced rowecehelon form
FOR A: Ive got:
1 1 1  6
1 2 3  1
3 4 4  5
I need help with B thanks.

Math  system of eqns  rahulkumarbudhwani, Wednesday, June 1, 2016 at 8:00am
1 0 0 41 /27
0 1 0 59/27
0 0 1 62 /27

Math  system of eqns  Drake, Wednesday, June 1, 2016 at 8:07am
How did you get that though

Math  system of eqns  Reiny, Wednesday, June 1, 2016 at 8:08am
1 1 1  6
1 2 3  1
3 4 4  5
1 1 1  6
0 1 4  7 from: add #1 and #2
0 7 1  13 from #3 x 1  #3
1 1 1  6
0 1 4  7
0 0 27 62 from #2 x 7 + #3
1 1 1 6
0 1 4 7 switch signs
0 0 1 62/27 divide by 27
so x3 = 62/27
now back substitute
x2  4(62/27) = 7
x2 = 248/27 7 = 59/27
x1 + 59/27 + 62/27 = 6
x1 = 41/27
x1=41/27 , x2=59/27, x3=62/27
Answer This Question
Related Questions
 Math  Find the augmented matrix for each of the following systems of linear ...
 Math  Went ahead and did the HW the teach recommended but she did not post the ...
 Math  Find a system of linear equations corresponding to the following ...
 college Algebra  Write the system as a matrix and solve it by GaussJordan ...
 Math  Which of the following are linear equations in x1, x2 and x3? (a) x1 + ...
 math help pls pls  Two systems of equations are shown below: System A 6x + y...
 Maths  Solve the following system of linear equations by addition. Indicate ...
 MATH  For what integer 0<n<1000, does the following system of n linear ...
 biology  Given the part of the molecule shown below, can the underlined atom ...
 math  Consider the following 6 relations on the set of real numbers: A) y=2x&#...
More Related Questions