# Tangent, Derivative and Second Derivative to a cubic

Investigate the relation between a tangent to a function, it's derivative and second derivative.

- Move the tangent so that it is horizontal. what's the value of the derivative?
- Move the tangent to the point of inflexion. What point of the derivative does it correspond to? What's the value of the second derivative?

## New Resources

## Discover Resources

Download our apps here: