write the augmented matrix of each system of equations
{4x1 - x2 + 2x3 - x4 = 4
{ x1 + x2 + 6 = 0
{ 2x2 - x3 -4x4 = 5
can explain this numbers behind x's are small i couldn't figure out how you make them small?
2007-09-23 11:50:15 · 6 answers · asked by w s 3 in Science & Mathematics ➔ Mathematics
The standard notation for subscripts is to use an underscore, so x₂ = x_2, for instance (or if you are sufficiently l337, you can just use the unicode subscripts - subscript n is located at unicode 0×208n).
Anyway, we have the system:
4x₁ - x₂ + 2x₃ - x₄ = 4
x₁ + x₂ ................. = -6
.... + 2x₂ - x₃ - 4x₄ = 5
So the nth entry of the mth row of the matrix is simply the coefficient of x_n in the mth equation. Thus the augmented matrix is:
[4, -1, 2, -1| 4]
[1, 1, 0, 0| -6]
[0, 2, -1, -4| 5]
2007-09-23 12:13:01 · answer #1 · answered by Pascal 7 · 1⤊ 0⤋
4 -1 2 -1 -4
1 1 0 0 6
0 2 -1 -4 5
2007-09-23 12:18:10 · answer #2 · answered by jamaliekal 2 · 1⤊ 0⤋
i like onions
try:
4 -2 2 -1
1 1 6 0
0 2 -1 -4
and the next matrix would consist of the answers
4
0
5
so just add that last matrix to the right of the first one?
i honestly dont know if this is correct! havnt done this for a long time
and what do you mean by the numbers behind the x's? the coefficients?
2007-09-23 11:52:40 · answer #3 · answered by ieieiweroiweoiieieieiieiwoiehfui 2 · 1⤊ 3⤋
74?
2007-09-23 11:53:35 · answer #4 · answered by Anonymous · 0⤊ 3⤋
sdfsdf
2007-09-23 11:53:56 · answer #5 · answered by Fade2black 2 · 0⤊ 4⤋
what grade is this?
2007-09-23 11:59:57 · answer #6 · answered by VA 3 · 0⤊ 3⤋