# Math Help - subspace of V

1. ## subspace of V

How do I verify that the following is a subspace of V?

w=(x,y,2x-3y), x and y are real numbers. V=R^3

I am stuck at how to set it up. This is what I think.

(x,y,2x-3y)+?=

2. Originally Posted by ephemeral1
How do I verify that the following is a subspace of V?

w=(x,y,2x-3y), x and y are real numbers. V=R^3

I am stuck at how to set it up. This is what I think.

(x,y,2x-3y)+?=

$(x,y,2x-3y)+(x',y',2x'-3y')=(x+x',y+y',2(x+x')-3(y+y'))$
$w=\left \{ x(1,0,2)+y(0,1,-3)\mid x,y\in \mathbb{R} \right \}$
$=\texttt{Span}((1,0,2),(0,1,-3))$