Slope, derivative and polar graph ends.

[math7]

In the application to graph polar curves, the HP Prime actually performs the graphical representation, but unlike what you can do in the Application Function, in polar you can not find the slope at any point on the graph, or draw the tangent line At a point, much less find the ends of some polar functions, and this is necessary when working with polar coordinates, I think that not only for functions in the variables "x" and "and" should these tools exist. Could you implement it in a future update?