Solving a System by Gaussian Elimination: Help Needed

[charmedbeauty]

Homework Statement

for some reason I am having real trouble trying to solve this system.

Homework Equations

The Attempt at a Solution

a=(10,11,4) v1=(2,1,4) v2=(-1,-2,1) v3=(3,3,-1)

the qstn does a belong to the span (v1,v2,v3)?

so I do gauss elim

but I keep running into dead ends can someone please show just the steps to start i.e. R1=R2 +R3

because every time I have tried I can't get the bottom row to have ENOUGH 0'S!

Thanks.

 

[who_]

Can you please show your work so that we may see how far you have gone and where you have gotten stuck?

 

[voko]

I do not see anything special about this system. Show us what goes wrong for you.

 

[charmedbeauty]

I do not see anything special about this system. Show us what goes wrong for you.

Well as it turns out it was really easy I just kept making mistakes (it was really late at night)
tried it the next morning and I got it fine.
apparently my brain does not work very well when deprived of sleep. Thanks though