Five hidden Excel rules show helper columns, LET, and LAMBDA in action, cutting errors and making updates quick for any growing sheet.

It's marginally more efficient: While the difference is negligible, the double-unary operator can be more efficient in extremely large workbooks. When you use *1 or +0, Excel must process this as a ...

Background The sit-to-stand (STS) test can assess physical function in people with chronic obstructive pulmonary disease (COPD); however, there are multiple versions. No study has used current ...

Excel processes the range (A1:A10) by converting it into an array in memory. This array is what Excel works with to calculate the sum. The distinction is subtle but important: while the range is the ...

A panel of human judges decided if the model’s work matched or exceeded the output of a skilled human worker. Here's what ...

PythoC lets you use Python as a C code generator, but with more features and flexibility than Cython provides. Here’s a first ...

C compiler, LustreC, into a generator of both executable code and associated specification. Model-based design tools are ...

Abstract: The Boolean matching problem via NP-equivalence requires determining whether two Boolean functions are equivalent or not up to a permutation and negation of the input binary variables. Its ...

Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Dr. JeFreda R. Brown is a financial consultant, Certified Financial Education Instructor, and researcher who has ...

The declaration date is when a company announces its next dividend payment; it's also an option's expiration date. Once a dividend is declared, it becomes the company's legal responsibility to ...

Jennifer Simonson is a business journalist with a decade of experience covering entrepreneurship and small business. Drawing on her background as a founder of multiple startups, she writes for Forbes ...

Introduction About 30% of depressed patients suffer from a protracted course in which the disorder continues to cause significant burden despite treatment efforts. While originally developed for ...