Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.

If you've ever tried building a product catalog in Excel, you know the headache — images float over cells, they don't move ...

The SCAN function lives in a single cell and spills the results down the column, ensuring my totals are always structurally ...

In recent years, the analysis of a control barrier function has received considerable attention because it is helpful for the safety-critical control required in many control application problems.