This 14-minute video lesson explains how the product of the transforms of two functions relates to their convolution. [Differential Equations playlist: Lesson 44 of 45]
This 10-minute video lesson looks at using the method of undetermined coefficients to solve nonhomogeneous linear differential equations. [Differential Equations playlist: Lesson 22 of 45]
This 11-minute video lesson gives another example using undetermined coefficients. [Differential Equations playlist: Lesson 23 of 45]
This 8-minute video lesson gives another example where the nonhomogeneous part is a polynomial. [Differential Equations playlist: Lesson 24 of 45]
This 6-minute video lesson concludes the series on undetermined coefficients by putting it all together. [Differential Equations playlist: Lesson 25 of 45]
This 12-minute video lesson shows how to use the convolution Theorem to solve an initial value problem. [Differential Equations playlist: Lesson 45 of 45]
This 19-minute video lesson shows how to solve a non-homogeneous differential equation using the Laplace Transform. [Differential Equations playlist: Lesson 35 of 45]
Walkthrough of Diffie-Hellman Key Exchange. Created by Brit Cruise.
What happens when there's way more than two holes? Created by David SantoPietro.
Learn about how particles move from an area of greater concentration to an area of lesser concentration through the process of diffusion.
Learn about diffusion, osmosis, and concentration gradients and why these are important to cells. Created by Sal Khan.
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This video shows you how to "hotwire" a digital camera. This video outlines the first step in making our digital camera work in the Bit-zee robot. The required voltage for the camera was determined by adding the1.5 volt AAA batteries (there are three of them) together to get 4.5 volts (because the batteries are wired in series). Since new batteries usually have a voltage that exceeds their marked rating the camera can easily run on the 5 volts that the center terminal of our L298 motor controller provides. Created by Karl Wendt.
In this video we show you how to attach Bit-zee's camera and route the wires. Created by Karl Wendt.
In this video we attach and wire a digital voice recorder to Bit-zee. Created by Karl Wendt.
Dimension of the Column Space or Rank. Created by Sal Khan.
Dimension of the Null Space or Nullity. Created by Sal Khan.
Introducing the diode as a circuit element. A diode conducts current in one direction but not the other. Created by Willy McAllister.
We solve a diode circuit graphically by plotting a diode i-v curve and resistor to find the intersection. Graphical solution methods are a common way to work with non-linear components like diodes. Created by Willy McAllister.
Our ancestors noticed that when amber was rubbed against fur it attracted small objects...why is this? Created by Brit Cruise.