Sequences as functions
A sequence can be thought of as a function from the integers to the real numbers.
There are two ways to establish whether a sequence has a limit.
Vector-valued functions
The cross product
The cross product is a special way to multiply two vectors in three-dimensional
space.
Parameterizing by arc length
We find a new description of curves that trivializes arc length computations.
Functions of several variables
Functions of several variables
We introduce functions that take vectors or points as inputs and output a
number.
Integrals with trivial integrands
We study integrals over general regions with and integrand equaling one.