Defining the derivative of a function and using derivative notation (K-A)

• Formal definition of the derivative as a limit (K-A)
• Formal and alternate form of the derivative (K-A)
• Worked example: Derivative from limit expression (K-A)
• The derivative of x² at x=3 using the formal definition (K-A)
• The derivative of x² at any point using the formal definition (K-A)
• Finding tangent line equations using the formal definition of a limit (K-A)