Question

Write v as a linear combination of u1,u2, and u3 if possible u1=<1,3,5> u2=<2,-1,3> u3=<-3,2,-4> v=<-1,7,2>

Answer 1

i dont get it....

Answer 2

find a linear combination (combination of u1 and u2 and u3) to make v

Answer 3

you are going to need variables

Answer 4

LOL...wat math is this?

Answer 5

linear algebra

Answer 6

do you know vectors?

Answer 7

im in alg 2...i never heard of this..is this college? cuz im still in hs freshman year

Answer 8

it's ehh algebra sort of would it help if it if i made it more simple like

a(1,3,5)+b(2,-1,3)+c(-3,2,-4)=(-1,7,2)

Answer 9

i dunt really under stand it, but i will still give u a medal

Answer 10

lol i don't want medal teacher doesn't give answers to pretests so

Answer 11

srry...dnno, ask sumbody else, like saifoo

Answer 12

\[a+b-3c=-1\]
\[3a-b+2c=7\]
\[5a+3b-4c=2\]

Answer 13

first one should be 2b

Answer 14

how do u do it using matrices cuz i noe ima mess up wen using subs and elim

Answer 15

hehe you can check it when you aren't supposed to use matrices that's how a lot of people on here find out the answers to long linear equations like this.

if you have a graphing calculator you can put 2nd>x^-1>move to edit>ENTER> dimensions of the matrix will be rows x colums so in this case 3x4>then put the coefficients into matrix so like 1,2-3,-1]

Answer 16

should look something like this