A community for students.
Here's the question you clicked on:
 0 viewing
aspenfields
 3 years ago
how do i solve the system of equations?
2x + 4y + 3z = 6
3x + 5y + 6z =3
2x + 3y + 4z = 8
aspenfields
 3 years ago
how do i solve the system of equations? 2x + 4y + 3z = 6 3x + 5y + 6z =3 2x + 3y + 4z = 8

This Question is Closed

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1are you familiar with matrices

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1well you can use the gaussian elimination

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1meaning you use the elementary row operations

beketso
 3 years ago
Best ResponseYou've already chosen the best response.12 4 3  6 3 5 6  3 2 3 4  8 subtract row 1 from row 3 and tell me what u get

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.10 1 1 2 is that right?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1yeah.now divide row 1 by 2

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1ok the answer i have above isnt row one is it or is row one in the problem still?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1no.it is still row 3.row one is ur original problem 2 4 3  6

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.12/3 4/5 1/2 2 right?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1it is actually 1 2 3/2  3 get it?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1well u take the first row.and u divide by 2.then it changes from 2 4 3 6 to 1 2 3/2  3

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1ohh! u divid by two not thr 2nd row :/lol now i got that ok

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1then your rows are now like this 1 2 3/2  3 3 5 6  3 0 1 1  2

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1sorry. multipy row 1 by 3 the subtract it from row 2 the u have a reduced row 2

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1when i subtract which number should be on top?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.11 2 3/2  3 _ _ _  _ 0 1 1  2 the only r0w that changes is row 2

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1yea,ok i get that so row to is now 3 8 9/2 3

beketso
 3 years ago
Best ResponseYou've already chosen the best response.13(3X3) = 0 That is how u do it.

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1meaning u take 1 from row1 and multiply by 3 the u subtract the answer from 3 in row 2 and u get ur as 0. do the same with the second term

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1then u get 1 2 3/2  3 0 1 3/2  6 0 1 1  2

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1ok then from there what do i do next ?

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1ok is this the answer or is the more?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.11 2 3/2  3 0 1 3/2  6 0 1 1 2 in row 1 u must eliminate 2 and in row 3 must eliminate 1.

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1add row 3 and row 2 to get 1 2 3/2 3 0 1 3/2 6 0 0 1/2 4 and u jst eliminated 1 from row 3

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1sorry u jst eliminated 1 from row 3

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1then now we eliminate 2 from row 1

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1i figured u ment that

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1then u get 1 0 9/2 9 0 1 3/2  6 0 0 1/2 4

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1basically u want to get to a point were u have 1 0 0  ? 0 1 0  ? 0 0 1  ?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1now divide row 3 by 1/2 (half)

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1what is 4 divided by half

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1then u have 1 0 9/2  9 0 1 3/2  6 0 0 1  8 what do u think u should do to eliminate 9/2?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1remember you want it to be 0

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1on then subtract 9/2?

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1what bout the numbers on the end?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1so mentally multiply row 3 by 9/2

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1and then subtract it from row 1

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1what do u get for row1?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1now u got 1 0 0  27 0 1 3/2 6 0 0 1 8

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1u must now eliminate 3/2.how do u think u do that?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1how do you think u can do it?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1sure.which row can u use to eliminate it?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1multiply row3 by 3/2 and add it to row2

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1that way 1 becomes 3/2 and you can add that to row 2.the 3/2 + 3/2 = 0 which eliminates 3/2

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1then u have 1 0 0 27 0 1 0 6 0 0 1 8 what is ur x,y and z?

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1but i think i made a mistake with the numbers somewhere

beketso
 3 years ago
Best ResponseYou've already chosen the best response.1should i paste the whole solution or can u figure out the mistake?

aspenfields
 3 years ago
Best ResponseYou've already chosen the best response.1i can figure it out now
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.