SOLUTION: Please!!!!!!!!!! Help me with this problem. Show all work and steps. Thanks 1. Find the reduced row echelon form of this augmented matrix [ 1 0 0 300 -3 1 3 400 -

Algebra ->  Matrices-and-determiminant -> SOLUTION: Please!!!!!!!!!! Help me with this problem. Show all work and steps. Thanks 1. Find the reduced row echelon form of this augmented matrix [ 1 0 0 300 -3 1 3 400 -      Log On


   

Question 1003856: Please!!!!!!!!!! Help me with this problem. Show all work and steps. Thanks

1. Find the reduced row echelon form of this augmented matrix
[ 1 0 0 300
-3 1 3 400
-1 0 1 250]
3. Find the reduced row echelon form of this augmented matrix
[1 -4 2 200
-2 9 -4 400
1 -4 3 100]











Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
Row Operation
matrix%283%2C4%2C1%2C0%2C0%2C300%2C0%2C1%2C3%2C1300%2C-1%2C0%2C1%2C250%29

1: add 3 times the 1st row to the 2nd row and you will have
matrix%283%2C4%2C1%2C0%2C0%2C300%2C0%2C1%2C3%2C1300%2C-1%2C0%2C1%2C250%29

2: add 1 times the 1st row to the 3rd row and you will have

matrix%283%2C4%2C1%2C0%2C0%2C300%2C0%2C1%2C3%2C1300%2C0%2C0%2C1%2C550%29

3: add -3 times the 3rd row to the 2nd row and you will have
matrix%283%2C4%2C1%2C0%2C0%2C300%2C0%2C1%2C0%2C-350%2C0%2C0%2C1%2C550%29

and, next one:
matrix%283%2C4%2C1%2C-4%2C2%2C200%2C-2%2C9%2C-4%2C400%2C1%2C-4%2C3%2C100%29
add 2 times the 1st row to the 2nd row and you will get
matrix%283%2C4%2C1%2C-4%2C2%2C200%2C0%2C1%2C0%2C800%2C1%2C-4%2C3%2C100%29
add -1 times the 1st row to the 3rd row and you will get
matrix%283%2C4%2C1%2C-4%2C2%2C200%2C0%2C1%2C0%2C800%2C0%2C0%2C1%2C-100%29
add -2 times the 3rd row to the 1st row and you will get
matrix%283%2C4%2C1%2C-4%2C0%2C400%2C0%2C1%2C0%2C800%2C0%2C0%2C1%2C-100%29

add 4 times the 2nd row to the 1st row and you will get

matrix%283%2C4%2C1%2C0%2C0%2C3600%2C0%2C1%2C0%2C800%2C0%2C0%2C1%2C-100%29