Learn when FILTER beats XLOOKUP, when it does not, and how to handle multiple matches, nth items, and multi-condition lookups with clear steps.

REDUCE allows you to iterate through your data, building your result step-by-step, in the same way a loop operates in a ...

Fix Excel formulas that won’t spill! Learn how to troubleshoot #VALUE errors caused by Analysis ToolPak functions and improve your workflow.

Excel's VALUE function has only one argument: where a is the value stored as text that you want to convert into a number. This can be hard-coded inside double quotes or a reference to a cell ...

Abstract: We present an electronically reconfigurable antenna array offering low probability of intercept/detect (LPI/LPD) and secure communications capabilities simultaneously at the physical layer.