At the undergraduate level, sometimes functions are of two variables (x,y). How do we find the maximum or minimum points of such a function?

Read the following PDF to find out!

**Recommended Book:**

Multivariable Calculus, 7th Edition

This is a highly practical book on Multivariable Calculus. It is also suitable for Engineers / Physics Majors. I learnt Multivariable Calculus from this book. ðŸ™‚