Calculating Equations of Tangent Lines to a Cubic Function through an External Point
I've seen posts in the forums regarding how to have GeoGebra calculate tangent lines to quadratic functions (and designating them as conics) through a point not on the function's curve, but I'm not sure if it's possible to do this with a cubic function.
I've seen an item that can draw tangent lines to a quartic function (https://www.geogebra.org/m/...), so it must be possible, but, when I try to use the tangent function or the shortcut icon/button, I get a tangent line to the curve--but not the one I want.
I've tried typing
and then using the button or the tangent function [tangent(A,p)], p being the label GG gave my cubic function.
The tangent that appears goes through (1,p(1)), not (1,4).