What is the formula for calculating the parabola radius of curvature at a specific point on the curve?

The formula for calculating the parabola radius of curvature at a specific point on the curve is: R (1 (dy/dx)2)(3/2) / d2y/dx2, where R is the radius of curvature, dy/dx is the first derivative of y with respect to x, and d2y/dx2 is the second derivative of y with respect to x.