Question

Let $V = \\{ (x_1, x_2, x_3, x_4) \in \mathbb{R}^4 \mid x_1 = x_2 \\}$. Consider $V$ as a subspace of $\mathbb{R}^4$ over the real field. Then the dimension of $V$ is equal to __________ (answer in integer).

Answer 1

The correct Answer is : 3 -3(Approx.)