Power series expansions and sigma notation for the trig functions sine and cosine.
Note that sine, as an odd function, only has terms with odd powers in its expansion, while cosine, being even, has terms with even powers.
(see above) current bane of my existence. I hate power series with the burning passion of a trillion perfect black-body...
only rebloging to confuse Kj cause she hates it when i speak math (:
Eh. Reminds me of freshman year. Lol, good times. Not really.
This always looked so intimidating and smart. Probably why I never bothered understanding it.
lol. I miss sine.
I remember when looking at stuff like this would scare me. Now its quite delightful.