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The material here takes us to the end of the course. I have included an extra section on multivariable calculus - simply an idea of what a multivariable function is and how to take partial derivatives.

The beginning of the study of vector-valued functions mirrors precisely the study of parametric equations. Most of the material in this week is nearly identical to what we had in the previous chapter.

In this chapter, we start examining the effect of having an independent variable determine two (and, in the next chapter, three) dependent coordinates. The most common applications are those in which we use the parameter of time to describe physical motion through the plane and through space.

We begin our study of Taylor Series by looking at each half of the phrase individually - first we study (finite) Taylor polynomials. Then, before we extend them forever, we look at how series with a variable behave.

In the sections covered in this unit, we do two things. First, we examine more convergence tests on positive (or non-negative) series. The tests range from ugly to beautiful, but are all useful. In the second section, we open up to the idea of allowing negative terms in our series and find that this leads to some very odd complications.

Through the three sections in this unit and the two sections in the next, we look at a few definitions and then study when series converge and diverge. We discover a number of tests that will help us figure out this information, including some very unusual-looking ones. The goal of this chapter is to allow us to use the information here when we try to express functions using certain infinite polynomials (we will call them power series). Knowing when a series converges or diverges will let us find out when our power series exist.