A series of free Calculus Video Lessons.
Directional derivative, and the corresponding definition of the gradient vector.
The Gradient Vector - Notation and Definition
This video talks about the directional derivative, and the corresponding definition of the gradient vector.
Gradient and directional derivatives
Introduction to the directional derivatives and the gradient
Finding the Directional Derivative
This video gives the formula and do an example of finding the directional derivative that corresponds to a given angle.
Multivariable Calculus: Directional derivative of $f(x,y)$
This video presents an example and calculates the derivative of a function of two variables in a particular direction. The derivative of $f(x,y) := 1 - x^2/2 - y^4/4$ in the direction of the vector ${\bf u} := (1,1)$.
Check out our most popular games!
Fraction Concoction Game:
Master fractions in the lab: mix, add, and subtract beakers to create the perfect concoction!
Fact Family Game:
Complete fact families and master the link between addition & subtraction and multiplication & division.
Number Bond Garden:
Clear the board by matching number pairs that sum to ten in this garden-themed mental math puzzle.
Online Addition Subtraction Game:
Practice your addition and subtraction skills to help the penguin find its mummy.
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