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Tutorial for evaluating a piecewise function given three different values

👉 Learn how to evaluate a piecewise function. A piecewise function is a function which uses different rules for different intervals. When evaluating a piecewise function, pay attention to the ...

The Advanced Google Sheets Features You Should Be Using but Probably Aren’t

This Google Sheets Advanced Tutorial explains IF, VLOOKUP, INDEX MATCH, and pivot tables, plus macros and Apps Script for ...
PC Magazine

I Ditched Password Generators and Made a Better One in Excel. Here's How

Because many password generators aren't as random as they seem, I built an improved one in Excel—and I'll show you exactly how you can, too. When the IBM PC was new, I served as the president of the ...
Investopedia

Oil Refineries: How They Work and Their Key Functions

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

ChatGPT Cheat Sheet: A Complete Guide to Features, Costs, and Use Cases

ChatGPT cheat sheet for 2026, covering features, pricing, availability, support for older devices, how it works, and top ...