# vander

## Purpose

Vandermonde matrix.

## Synopsis

    V = vander(x)

## Description

`V = vander(x)` returns the Vandermonde matrix whose columns are powers of the elements of `x`. If `n = length(x)`, then the matrix is `n`-by-`n`. The elements of a Vandermonde matrix are

Vandermonde matrices arise in connection with fitting polynomials to data.

## Examples

Create a small Vandermonde matrix from a vector `x`:

    x =
        2    3    4    5

    V = vander(x)

    V =
         8    4    2    1
        27    9    3    1
        64   16    4    1
       125   25    5    1

## See Also

    hankel, polyfit, toeplitz

(c) Copyright 1994 by The MathWorks, Inc.