- http://library.caltech.edu/publications/borrowing.htm Caltech Alumni Assoc 
- any CAS book


24 atan(1/8) + 8 atan(1/57) + 4 atan(1/239) =
3.141 592 653 589 793 + 1.776 356 839 400 250 5*10^-15i
should be Pi

4 arctan(sin(1/23)^2 + cos(1/23)^2)
Pi

logb(128) = 6.999 999 999 999 999
should be
7

log(2^1024)
(1024*ln(2))/ln(10) ==> 308.255...

solve((1+x)/x = x, x)
x = (sqrt(5)+1)/2 or x = -(sqrt(5)-1)/2

solve(x^2-x-1=0, x)
x = (sqrt(5)+1)/2 or x = -(sqrt(5)-1)/2

tan(x)*cos(x)
sin(x)

sin(x)/tan(x)
cos(x)

(-2)^(1/3)
(2^(1/3))/2 + (sqrt(3) * 2^(1/3))/2 * i