value_at_lb()solves for beta Lorenz curves.
Arguments
- x
numeric: Point on curve.
- A
numeric: Lorenz curve coefficient. Output of
regres()$coef[1].
- B
numeric: Lorenz curve coefficient. Output of
regres()$coef[2].
- C
numeric: Lorenz curve coefficient. Output of
regres()$coef[3].