Tangents, normals and derivative graphs

What this note covers

1. A tangent needs a point and a gradient
2. Normals and exceptional gradients
3. Finding where a tangent has a specified direction
4. Tangents through an external point
5. Constructing a derivative graph from known slopes
6. Using a tangent as a local approximation

6 sections · 10 key terms & formulas · 6 common mistakes