This video explains how the dollar sign is used in Excel formulas to control whether cell references stay fixed or change ...

A common source of errors in Excel is "the gap"—a situation where you add new data to the bottom of a list, but your formulas ...

Abstract: In a paper by Willems et al., it was shown that persistently exciting data can be used to represent the input-output behavior of a linear system. Based on this fundamental result, we derive ...

Audi have confirmed a successful fire-up of its power unit ahead of the 2026 Formula 1 season. German manufacturer Audi have taken over Sauber and revealed on Tuesday that they ran their power unit ...

F1 news, rumours and gossip: Formula 1 latest updates on teams, driver transfer market and contracts Follow the latest news from the world of Formula 1 during the off-season ahead of the 2026 campaign ...