A formula involving sums of the form $\sum d(n)f(n)$ and $\sum d(n)g(n)$ is derived, where $d(n)$ is the number of divisors of $n$, and $f(x), g(x)$ are Hankel ...

Cambridge University Press (www.cambridge.org) is the publishing division of the University of Cambridge, one of the world’s leading research institutions and winner of 81 Nobel Prizes. Cambridge ...

Tables, named ranges, line breaks, modern functions, and helper columns make Excel formulas easier to read, audit, and fix.

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...