00:01
Okay, so we have two ways to do multiplication with vectors, right? one is the dot product.
00:10
I'm assuming you need both of them.
00:13
So, a dot b will be, you just multiply the x's with x, y's with y, and z's with z, right? so, and then negative 3 plus 0 plus 20, which is 17.
00:29
This is also called scalar product because as you see, the answer became a scalar, not a vector.
00:34
The other one is cross product or vector product because this produces a vector.
00:46
A cross b, you put into a determinant, which is 315 negative 104.
01:02
There are a lot of ways to do this.
01:03
This is how i like doing it...