A Russian mathematician has developed a new method for analyzing a class of equations that underpin models in physics and ...

Discover how the PEG payback period helps gauge investment potential by estimating the time needed to double stock investments. Learn its formula and limitations.

Abstract: The distribution system loss function and voltage dependence are examined, and useful approximations derived that are analogous to the loss formulae used in the transmission system. The ...

Pull requests help you collaborate on code with other people. As pull requests are created, they’ll appear here in a searchable and filterable list. To get started, you should create a pull request.

Update: On Dec. 10, 2025, the FDA expanded the ByHeart recall to include all formula the company has ever produced. If you have ByHeart Whole Nutrition infant formula, stop using it immediately.

Abstract: Evaluation of the electromagnetic (EM) field propagation across the air–sea interface is important for wireless communication between aerial and underwater vehicles and undersea remote ...

Arccosine, commonly abbreviated as acos, is a mathematical function that calculates the inverse of the cosine function. It’s used to find an angle when you know the cosine value of that angle. The ...

Whether you’re a student studying trigonometry or a professional looking for a way to calculate angles in your work, understanding how to calculate sine by hand is a valuable skill. This article will ...