**Learning objectives**

- Distinguish constrained and unconstrained optimization
- Compare two methods: find critical points, do gradient search.
- Formulate curve fitting as an optimization problem

**Before class**

- Read Hughes-Hallett section 15.2
- Ponder Hughes-Hallett problems: 15.2: 2, 23, 24, 28.

**In class**

- Mathematica notebook on curve fitting (work in progress)
- Gradient flow
- Wikipedia on gradient search
- Gradient search – step by step

**Daily Schedule**|**WeBWorK**|Assignments

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