commit b4b57b966c21de080f8982e655e42d348fba1512 parent d252f2c1decf762ee79a2f972a8d2634ac736178 Author: thing1 <thing1@seacrossedlovers.xyz> Date: Tue, 21 Oct 2025 14:03:43 +0100 notes from the 20th Diffstat:
| A | CS12020/20.10.25.md | | | 2 | ++ |
| A | PH16210/20.10.25.md | | | 14 | ++++++++++++++ |
2 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/CS12020/20.10.25.md b/CS12020/20.10.25.md @@ -0,0 +1,2 @@ +20/10/25 +======== diff --git a/PH16210/20.10.25.md b/PH16210/20.10.25.md @@ -0,0 +1,14 @@ +20/10/25 +======== + +- see FIG1 for how to divide complex numbers + +Polar form +---------- + +- this is storing a position in the form theta and the radius +- see FIG2 for an example +- multiplying by e^i(theta) rotates a vector by angle theta +- multiplying a vector by i rotates by 90 deg +- see FIG3 for an example +- see FIG4 for eulers formula