Equivalencies

Exponentials

Logarithms

   alogcn = nlogca     (example: 8log2n   =   nlog28   =   n3 )

   if n   =   2i   then   log2 n   =   i

Factorials

0! = 1

n! = n(n-1)(n-2) . . . 1

Summations

i=1 to n 1 = n

i=1 to n i = n(n+1)/2

i=1 to n i2 = n(n+1)(2n+1)/6