Ononot — Let W be a subspace of \mathbb{R}^4 defined by the system of

Vectors & Spaceshard

0:00.0

Let $W$ be a subspace of $\mathbb{R}^4$ defined by the system of linear equations:

$x_1 + x_2 + x_3 + x_4 = 0$ $x_1 - x_2 + x_3 - x_4 = 0$

Which of the following vectors are in $W$ ?