3-2-2. Vectors

All right. So, back to vector addition and multiplication by numbers. After all, every topic in linear algebra is going to center around these two operations. Luckily, each one’s pretty straightforward to define. Let’s say we have two vectors, one pointing up and a little to the right and the other one pointing right and … Read more

Focusing our attention on two dimensions for the moment, you have a horizontal line called the x-axis and a vertical line called the y-axis. The place where they intersect is called the origin, which you should think of as the center of space and the root of all vectors. After choosing an arbitrary length represent … Read more

The fundamental root of it all building block for linear algebra is the vector. So, it’s worth making sure that we’re all on the same page about what exactly a vector is. You see, broadly speaking, there are three distinct but related ideas about vectors, which I’ll call the physics student perspective, the computer science … Read more