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apple_pi
Group Title
How do you put this into reduced row echelon form?
$$
\left[\begin{array}{rrrr}
3 & 2 & 1 & 8 \\
5 & 1 & 3 & 23 \\
4 & 1 & 5 & 18
\end{array}\right]
$$
 2 years ago
 2 years ago
apple_pi Group Title
How do you put this into reduced row echelon form? $$ \left[\begin{array}{rrrr} 3 & 2 & 1 & 8 \\ 5 & 1 & 3 & 23 \\ 4 & 1 & 5 & 18 \end{array}\right] $$
 2 years ago
 2 years ago

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sami21 Group TitleBest ResponseYou've already chosen the best response.0
1) first of all divide with 3 the whole 1st row to get pivot point 1 (all other elements below it should be zero ) . 2) then subtract 4 times of row 1 from 3rd row 3) now subtract 5 times of row one from 2nd row do this and let me know that you get .
 2 years ago

apple_pi Group TitleBest ResponseYou've already chosen the best response.0
ok thanks i'll work on it
 2 years ago

sami21 Group TitleBest ResponseYou've already chosen the best response.0
there are steps after this to carried out .. if you want to completely do this first do the above 3 steps and then will let you the further steps..
 2 years ago

apple_pi Group TitleBest ResponseYou've already chosen the best response.0
So now I have $$ \left[\begin{array}{rrrr} 1 & \frac{2}{3} & \frac{1}{3} & \frac{8}{3} \\ 0 & \frac{13}{3} & \frac{14}{3} & \frac{109}{3} \\ 0 & \frac{11}{3} & \frac{11}{3} & \frac{46}{3} \end{array}\right] $$
 2 years ago

sami21 Group TitleBest ResponseYou've already chosen the best response.0
1) ok now multiply the second row with 13/3 to get 1 at the first point 2) then subtract 11/3 times of 2nd row from the third row .
 2 years ago

apple_pi Group TitleBest ResponseYou've already chosen the best response.0
1) multiply? would that possibly be divide by 13/3?
 2 years ago

sami21 Group TitleBest ResponseYou've already chosen the best response.0
i should have written to multiply with 3/13 ... yes if you divide with 13/3 same .. end result will be 1
 2 years ago

apple_pi Group TitleBest ResponseYou've already chosen the best response.0
Oh, yeah I got it from here. Thanks
 2 years ago

sami21 Group TitleBest ResponseYou've already chosen the best response.0
let me give you online interactive tool for free to convert matrix to reduced ech form. go here http://www.math.odu.edu/~bogacki/cgibin/lat.cgi select Transforming a matrix to reduced row echelon form (third one in list) then select 3 rows and three columns then enter the left hand part of matrix it will teach you complete steps !
 2 years ago
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