• Interpret and use partial derivatives as multipliers with units
• Use the master equation for and small and
• Make numerical approximations of partial derivatives
• Use a partial derivative in applied contexts (local linear approximation)
• Consult the main points of the lesson

Before class

• Read Hughes-Hallett 9.3
• Ponder problems  9.3.1, 2, 6, 10, 12.

In class

• Approximating and using partial derivatives: work on problems.