Definite integral of product of sines. The integral of sin(mt) * sin(nt) = 0, except for the special case when m = n. When m = n, the integral evaluates to pi. Created by Sal Khan.
Definite integral of the product of sine and cosine. Integrating sin(mt) * cos(nt) over a full period equals zero for any integer m and n. Created by Sal Khan.
Learn about the many types of interspecific interactions: competition, predation, herbivory, symbiosis, parasitism, mutualism, commensalism. Created by Sal Khan.
Interest groups and lobbying. NAACP, US Chamber of Commerce, NRA, AARP, AFL-CIO, AMA.
In this video, we expand the equation to calculate simple interest for a single period, P*(1+r), to calculate interest when interest is charged for more than one period and that interest is compounded at different intervals. By doing so, we can better understand the difference between simple and compound interest. Created by Sal Khan.
Changes in interest rates in one country impact economic conditions in other countries. In this video, walk through a chain of events that starts with a change in interest rates in the United States that affects the relative value of the dollar, the Japanese Yen, and exports.
The basic dynamic of an interest rate swap. Created by Sal Khan.
The basic dynamic of an interest rate swap. Part 2. Created by Sal Khan.
An introduction to Intergalactic Scale. Created by Sal Khan.
After the horrors of the first half of the 20th century, the world (through the United Nations) tries to articulate universal human rights.
Interphase of the cell cycle, including G₁, S, and G₂ phases. How the cell replicates its DNA before mitosis.
How to interpret the market price of a futures contract relative to the fair value in the premarket. Created by Sal Khan.
A high level overview of Islam, the 5 pillars of Sunni Islam, and the Muslim belief that Islam is the extension of the faith of Abraham, Moses and Jesus.
Amino acids and the central dogma of molecular biology. Amino and carboxyl groups, side chains, and zwitterions.
Balance sheets are a way of showing an entities assets and liabilities. In this video we use the example of purchasing a home to show what a balance sheet might look like in that situation. Created by Sal Khan.
In this video, we think how bonds work. Topics include what it means to buy a bond, what it means to issue a bond, coupon rates, par value, and maturity. Created by Sal Khan.
Introduction to carbohydrates (saccharides). Monomers and polymers. Glucose and glycogen.
Introduction to centripetal force, which accelerates an object toward the center of the circular path.
Introduction to cilia, flagella and pseudopodia.
Ohm’s Law is V = IR, where V = voltage, I = current, and R = resistance. Ohm’s Law allows you to determine characteristics of a circuit, such as how much current is flowing through it, if you know the voltage of the battery in the circuit and how much resistance is in the circuit. Created by Sal Khan.