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- anonymous

Linear algebra question (follows in posts)

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- anonymous

Linear algebra question (follows in posts)

- jamiebookeater

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- anonymous

|dw:1328672713805:dw|

- bahrom7893

got an A, but suck at it.. let's see if i can help haha

- anonymous

|dw:1328672772767:dw|

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- anonymous

either show that Sp(S) = R^2 or give an algebraic specification for Sp(S). If Sp(S) =\= R^2, then give a geometric description of S.

- bahrom7893

crap, don't remember any of the definitions.. what was Sp again?

- anonymous

Sp is span, R^2 is 'two space'

- bahrom7893

I think what the question is asking is that you have to be able to rewrite all vectors in R^2 in terms of a and c. Actually I really am not sure how to even approach this.

- bahrom7893

I'm askin myin for help.. hold on, hopefully she'll show up

- anonymous

Thanks

- bahrom7893

teamwork lol.. (this is why u shouldn't take summer math courses, you go by so fast that you forget everything)

- anonymous

Yeah, same happened to me with Statistics, haha

- anonymous

I'm ducking out, if someone comes by post up a solution...be back in a few

- bahrom7893

ok

- anonymous

back

- anonymous

|dw:1328673881252:dw|
|dw:1328673892248:dw|
either show that Sp(S) = R^2 or give an algebraic specification for Sp(S). If Sp(S) =\= R^2, then give a geometric description of S

- anonymous

the second vector is a multiple of the first (multiply by -2) so the subspace is the spaced spanned by {1,-1} in other words all multiples of this vector.

- anonymous

Is [1, -1] in R^2?

- anonymous

sure

- anonymous

all combinations of this think will look like {x, -x} so basically you have the line
\[y=-x\]

- anonymous

okay, thanks.

- anonymous

I have a follow up question too, you have time?

- anonymous

|dw:1328674387150:dw|
is Sp(S) in R^3?

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