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**Linear Algebra- Basis**

## Homework Statement

Is {e1,e2} a basis for R

^{3}?

## Homework Equations

## The Attempt at a Solution

I know that {e1,e2,e3} is a basis for R

^{3}

same here,

Is this one a basis for R

^{3}

{(1,1,2)

^{T},(2,2,5)

^{T}}

I know that

{(1,1,2)

^{T},(2,2,5)

^{T},(3,4,1)

^{T}}

is a basis for R

^{3}.

Perhaps, I am a little unclear with the definition.

Would appreciate any help.

Roni

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