Table of Contents

Introduction to this notebook

Introduction to partial differentiation

Recap of derivatives of standard functions

A function of two variables

Differentiating a function of two variables

Lots of practise questions

What does a function of two variables look like?

If the derivative is the slope of a curve, what is the partial derivative?

Maxima and minima

Saddle points

How can we tell whether it's a max, min or saddle point?

The chain rule

Small increments

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