Numbers like pi, e and phi often turn up in unexpected places in science and mathematics. Pascal's triangle and the Fibonacci sequence also seem inexplicably widespread in nature. Then there's the ...

Cell notes are the clutter of the Excel world—they block your view and get in the way of formulas. That's why you should adopt the developer mindset by tucking notes inside your formulas, keeping your ...

A differential equation is an equality constraining a mathematical function in relation to its derivatives over one or multiple variables. Such equations may constitute the mathematical model for a ...