xxMsJojoxx
Junior Member
- Joined
- Oct 6, 2020
- Messages
- 54
I cannot figure out how to solve the 2nd row for Row-Echelon Form.
-- How you know which equation to arrange as the second row?
For example, the equation is 2x-3y = -9 AND 5x+4y=58. So the augmented matrix form is:
Then to reduce to row-echelon form...
For the 1st row, I multiplied by 1/2., to get:
But I'm stuck at the second row. I tried multiplying the 1st row by -5, then adding to row 2 to get: . This is obviously wrong.
Are there any tips on to know which equation to select as 1st, and what number to multiply the 1st row by, to get the second row in the matrix?
-- How you know which equation to arrange as the second row?
For example, the equation is 2x-3y = -9 AND 5x+4y=58. So the augmented matrix form is:
Then to reduce to row-echelon form...
For the 1st row, I multiplied by 1/2., to get:
But I'm stuck at the second row. I tried multiplying the 1st row by -5, then adding to row 2 to get: . This is obviously wrong.
Are there any tips on to know which equation to select as 1st, and what number to multiply the 1st row by, to get the second row in the matrix?
Last edited: