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.Sam.Best ResponseYou've already chosen the best response.0
row reduction=elimination?
 one year ago

m23chrisBest ResponseYou've already chosen the best response.0
im not exactly sure what you mean
 one year ago

m23chrisBest ResponseYou've already chosen the best response.0
im trying to find x and y
 one year ago

.Sam.Best ResponseYou've already chosen the best response.0
http://en.wikibooks.org/wiki/Linear_Algebra/Row_Reduction_and_Echelon_Forms
 one year ago

shivam_bhallaBest ResponseYou've already chosen the best response.0
@.Sam. ,you are right
 one year ago

.Sam.Best ResponseYou've already chosen the best response.0
First make x the same 4x+9y=1 times 3 3x+7y=1 times 4  12x+27y=3 12x+28y=4 ======== y=1 y=1 4x+9y=1 4x+9(1)=1 4x+9=1 Solve for x
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.2
well row reduction deals with matrices and elimination deals with systems of equations, so they're slightly different, but they get you the same answer.
 one year ago

m23chrisBest ResponseYou've already chosen the best response.0
i need to solve it using the matrix
 one year ago

shivam_bhallaBest ResponseYou've already chosen the best response.0
see here @m23chris : http://www.math.hmc.edu/calculus/tutorials/linearsystems/
 one year ago

m23chrisBest ResponseYou've already chosen the best response.0
we never really did it like this its hard to understand
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.2
4x+9y=1 3x+7y=1 4 9 1 3 7 1 1 9/4 1/4 (1/4)*R1 3 7 1 1 9/4 1/4 0 1/4 1/4 R2  3*R1 > R2 1 9/4 1/4 0 1 1 4*R2 1 0 2 R1  (9/4)*R2 > R1 0 1 1 So the solutions are x = 2 and y = 1
 one year ago

m23chrisBest ResponseYou've already chosen the best response.0
so youre dividing by 4 in the first row
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.2
yes in the third step
 one year ago

m23chrisBest ResponseYou've already chosen the best response.0
ok i get it now but i have 2 more questions involving 3 rows using the matrix can you help me?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.2
sure, just make a new question and let me know about it
 one year ago
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