Vector Functions
We very firstly saw vector functions back while we were looking at the Equation of Lines. In that section we talked about them as we wrote down the equation of a line in R^{3} in terms of a vector function (occasionally known as a vector-valued function). In this part we want to look a little closer at them and we as well want to look at some vector functions in R^{3} other than lines.
A vector function is a function which takes one or more variables and returns a vector. We will spend most of this section looking at vector functions of a single variable like most of the places in which vector functions come here will be vector functions of single variables. Though, we will in brief look at vector functions of two variables later.