Previous | Next --- Slide 15 of 33
Back to Lecture Thumbnails
potato

I really liked the idea of thinking as complex numbers as another way to represent 2D vectors and i representing a 90 degree turn. This viewpoint made it easier to understand quaternions later on where each imaginary component was a 90 degree rotation as well which explains why i^2 = j^2 = k^2 = ijk = -1.

sponge

This explanation made a lot of intuitive sense and honestly really made me feel less scared of complex numbers!

bepis

I like this a lot, it is much easier to reason about than the abstract idea that i is the square root of -1.

FeiFeiFei

Exactly, looking at complex number with this intrepretation makes complex number much more intuitive.