March 2004
Beginner
504 pages
9h 2m
English
Content preview from Beginning Math and Physics for Game ProgrammersBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Dot Product
Remember when you first learned the multiplication tables? Your teacher probably told you that 2 times 3 could be written as 2 × 3 or as 2 • 3, and that they mean the same thing. This statement is true for scalar quantities. However, it's not true for more complex structures, such as vectors. We'll first look at 2 • 3, which is called the dot product. Then we'll investigate the cross product, 2 × 3, in the next section.
The most important thing to remember about the dot product of two vectors is that it always returns a scalar value. Let's first discuss how to calculate it, and then we'll talk about what that number represents.
NOTE
Some math texts call the dot product of two vectors the scalar product because that is what the dot ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.