I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those ...

Abstract: Solving electromagnetic inverse scattering problems (ISPs) is challenging due to the intrinsic nonlinearity, ill-posedness, and expensive computational cost. Recently, deep neural network ...

Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric identities, ...

Abstract: Finding the inverse z-transform of a rational function is usually considered a completely routine task with nothing special to say about it. However, practically all the procedures described ...

A function is a relation such that for each \(x\)-value there is only one corresponding \(y\)-value. In other words, a function cannot contain two different ordered pairs with the same first ...