Value of Vandermonde Determinant/Formulation 2

Theorem
Let $V_n$ be the Vandermonde determinant of order $n$ defined as the following formulation:

Its value is given by:
 * $\ds V_n = \prod_{1 \mathop \le j \mathop \le n} x_j \prod_{1 \mathop \le i \mathop < j \mathop \le n} \paren {x_j - x_i}$

Proof
The proof follows directly from that for Value of Vandermonde Determinant/Formulation 1 and the result Determinant with Row Multiplied by Constant.