Whats your favourite identity?

[Just A Fat Round Bird]

I guess mine would be the binomial identity since I tended to use it alot at some point. And its incredibly useful for compacting countings.

 

[Skitarii]

 

[Fascist Frederick]

Quaternion

 

[KittyGremlin]

albania

 

[Open Window Maniac]

Clark Kent.

 

[Thunk Provoker]

sin(x)ˆ2 + cos(x)ˆ2 = 1

 

[Retink]

Stolen

 

[Chocolate Wombat]

The secret one.

 

[Stabmaster Arson]

Definitely this one, crackers.

 

[Quantum Diabetes]

Rapper and actor

 

[Flatline]

"Christian. American. Father. Husband. In that order."

 

[Ratboy Genius]