Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

A customer normally buys a cup of coffee and one doughnut on the way to work in the morning. However, for one day only, the coffee shop has dropped the price of doughnuts by 30 percent. The customer ...

The challenge is wrapping your head around the difference between elasticity and inelasticity of demand. Elasticity of demand measures how much the demand for a product or service changes relative to ...

Elastic products, like air travel, see demand vary with price changes, affecting investment volatility. Inelastic goods, such as insulin, maintain steady demand despite price fluctuations, offering ...

In order for a small-business order to price her products or services correctly, she must be able to understand what impact that price will have on demand. In some cases, demand will rise or fall with ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...