Vectors & Dot Product • Math for Game Devs - Part 1.Note

numbers are always represent smth, they are not just numbers

1 dimensional vector

only have 1 axes, and 1 number to represent position

position - 2
- vector (length is always positive)
components - (a,b) 2,3
sign (x) - direction
- in one dimension you can only have directions that are either -1 or 1
absolute number (x) - length / magnitude - (0, -3) ⇾ 3
unit vector = vector that have the length of 1
value

have 2 axes, and 2 numbers to represent position
X - red
Y - green
Z - blue

- adding and extracting - a+b=b+a and a-b≠b-a - negation - a (2,1) ⇾ -a (-2,-1) - reciprocal - a÷b=a×(1÷b)

to represent something the same lengh we use circles but not in 1 demention