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.
Approximating with the gradient
We use the gradient to approximate values for functions of several variables.
Differentiability
We introduce differentiability for functions of several variables and find tangent
planes.
Interpreting the gradient vector
The gradient is the fundamental notion of a derivative for a function of several
variables.