Tangent, Curvature, Slope, Derivative

Tangent, in geometry, the tangent line to a curve at a point is that straight line that best approximates (or “clings to”) the curve near that point. It may be considered the limiting position of straight lines passing through the given point and a nearby point of the curve as the second point

Tangent Line - Equation, Slope, Horizontal

calculus - Problem with basic definition of a tangent line

14.5 Directional Derivatives

2. The Slope of a Tangent to a Curve (Numerical Approach)

derivatives - Working out gradient of tangent through

Derivative as slope of a tangent line

Curve Derivatives - Grasshopper - McNeel Forum

2. The Slope of a Tangent to a Curve (Numerical Approach)

Determining lines tangent to graph of function from point outside function