Kalid Azad

BetterExplained teaches math the intuitive way: clear, visual lessons on imaginary numbers, exponents, calculus, trigonometry and more, with an Aha! moment before the details.

Popular posts: 20
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A Programmer’s Intuition for Matrix Multiplication

2020299 points90 commentscited by 5Math & Algorithms details

What does matrix multiplication mean? Here's a few common intuitions: This is useful when first learning about vectors: vectors go in, new ones come out.…

Aha Moments When Learning Git

2011219 points34 comments Tools & Productivity details

Git is a fast, flexible but challenging distributed version control system. Before jumping in: Along with a book, tutorial and cheatsheet, here are the…

Quake's Fast Inverse Square Root

2011107 points63 commentscited by 15Math & Algorithms details

I'm no graphics expert, but appreciate why square roots are useful. The Pythagorean theorem computes distance between points, and dividing by distance helps…