The Smith chart appeared in 1939 (Ref. 1) as a graph-based method of simplifying the complex math (that is, calculations involving variables of the form x + jy) needed to describe the characteristics ...

What Does Math Teaching Look Like in U.S. Schools? 5 Charts Tell the Story By Sarah Schwartz — May 18, 2023 5 min read iStock/Getty ...

You Can Get By in Excel Without Math Skills . Microsoft Excel has so many user-friendly and automated tools that most people with even a basic understanding of math can begin, cre ...