I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips.

In this video, I will show you how to evaluate an angle in degrees using the sum formula of cosine. We will need to use the formula because we cannot evaluate using the unit circle. We will then ...

Have you ever thought of the humble SUM function as a secret weapon for advanced analytics? Most Excel users see it as a basic tool for adding numbers, but what if I told you it could do so much more?

Google Sheets is a versatile spreadsheet app you can use across multiple platforms, including any browser as a web app, on Android or iOS as a mobile app, or even as a desktop app through ChromeOS.

Q. I manually maintain an accounts receivable aging report at our office because we use a simple cash-based accounting system that doesn’t offer such reporting. Is there a way to make this more ...

Let’s be honest—Excel can feel like a double-edged sword. On one hand, it’s an incredibly powerful tool for organizing data, crunching numbers, and making sense of the chaos. On the other, mastering ...

Microsoft Office has a number of comparison operations so you can check if a value is greater than, equal to or less than another value using the standard greater than, less than and equal symbols.

Wondering how to use VLOOKUP and SUM across multiple sheets in Excel? We’ve got you covered right here. VLOOKUP is a useful function in Excel that can help you in many ways, especially when dealing ...

spartacus=# SELECT complex_add(ARRAY[1, 2, 3, 4, 5]); ERROR: aggregate function calls cannot contain set-returning function calls LINE 2: SELECT COALESCE(SUM(unnest ...