Evaluates a polynomial at given locations.

Syntax

v = PolyVal(c,x)

Arguments

Name

Description

c

A vector of the coefficients of the polynomial in descending order of power.

x

A scalar or vector of values where the polynomial is evaluated.

Output

Name

Description

v

A scalar or vector of the polynomial values at the entries of x.

Example

Find the values of x2 – 3x + 2 at its roots [2.0, 1.0]

Syntax

Result

V =   0.0   0.0

Comments

A non-zero imaginary part indicates a non-existent root.

See Also:

PolyRoots