solve the following system of equations using matrices,do not use decimals.
3c-b=5a+2
-2b-4a=c-1
2c+2=2b+3a
2006-07-26 09:04:35 · 5 answers · asked by shoppinggirl456 2 in Science & Mathematics ➔ Mathematics
Write each equation in the form _a + _b + _c = _. Then put the coefficients and constant term, in the order you put them, in a matrix, thusly:
If the first equation was 5x - 4y +z = 7, then the first row would be [5 -4 1 7].
Then reduce the matrix using Linear Algebra.
2006-07-26 09:12:54 · answer #1 · answered by Anonymous · 2⤊ 0⤋
The answers are:
a = -22/25
b = 57/25
c = -1/25
try to solve it yourself, otherwise you'll fail your next exam.
Math teachers like to give problems like these for homework so you're prepared for the next exam.
2006-07-26 10:07:07 · answer #2 · answered by A K F 2 · 0⤊ 0⤋
first of all
determine the matrix (A)i,j ; i,j=1..3
this can be read right from the system you gave.
next you can use for instance Cramer's rule to solve the variables.
hope this helps.
2006-07-26 09:09:57 · answer #3 · answered by gjmb1960 7 · 0⤊ 0⤋
You should work it out for yourself as it's your homework!
2006-07-26 09:13:33 · answer #4 · answered by the_emrod 7 · 0⤊ 0⤋
i can tell you
But do you own homeword by urself
2006-07-26 09:07:33 · answer #5 · answered by Anonymous · 0⤊ 0⤋