RConics (version 1.0)

quadraticFormToMatrix: Transformation of the quadratic conic representation into the matrix representation.

Description

Transformation of the quadratic conic representation into the matrix representation.

Usage

quadraticFormToMatrix(v)

Arguments

v

a \((6 \times 1)\) vector of the parameters \((a, b, c, d, e, f)\) of the quadratic form \(ax^2 + bxy + cy^2 + dxz + eyz + fz^2 = 0\).

Value

A \((3 \times 3)\) matrix representation of the conic (symmetric matrix).

Examples

# NOT RUN {
  v <- c(2,2,-2,-20,20,10)
  quadraticFormToMatrix(v)
# }