methods / stuff.mdon commit index laws wtf is this year 8 (36eb1af)
   1# Index laws
   2
   3$a^m \times a^n = a^{m+n}$  
   4$a^m \div a^n = a^{m-n}4$  
   5$(a^m)^n = a^{_mn}$  
   6$(ab)^m = a^m b^m$  
   7${({a \over b})}^m = {a^m \over b^m}$
   8
   9# Fractional indices
  10
  11$^n\sqrt{x}=x^{1/n}$