[racket] What math do you want to do in Racket?

Being a glutton for punishment, I've decided to write a `math' 
collection to be shipped with Racket. I'm writing it in Typed Racket, so 
Typed Racket programs that `(require math)' can apply mathematical 
functions with no overhead and regular Racket programs will incur only 
the usual contract checks. Also, Vincent's TR optimizer will fill the 
math collection with rainbows and sunshine.

I know what *I* want in a math library: statistics (for my research) and 
basic linear algebra (for `plot'). What do *you* want?

(FWIW, this started with Antonio asking for inverse hyperbolic functions 
on the dev mailing list. I just did those today, and factorial, 
log-factorial, gamma, and log-gamma yesterday.)

Neil ⊥