inscribed_circle: Create a data frame for a circle marking the curvature of a...
In dtkaplan/mosaicUSAFA: Functions, data, and tutorials for the Math 141Z course

Create a data frame for a circle marking the curvature of a function.

1	inscribed_circle(ftilde, x0 = 0)

`ftilde`	A tilde expression defining a function
`x0`	The value for the input at which the curvature is to be calculated.

inscribed_circle() return a data frame with x and y components describing the inscribed circle at $x_0, f(x_0)$. Plot this with gf_path(y ~ x) curvature_function() returns a function that gives the curvature of the specified function for any input $x$. It's much like D() in the way it is used.