Show equation of tangent

[pinkman]

(11-13-2019 05:01 AM)swisscow Wrote:  Hi

I can't seem to work out how to show the equation of a tangent line in the graph view. I can see the tangent ok and move it around but not view the equation. I would be grateful for some help,

Many thanks

I’ve got it!
Use the Geometry App, draw your function and the tangent using symb view, then in num view find the equation.

Or in CAS: equation(tangent(plotfunc(x^3-x,x),1))