Recent content by hockeygamestar2006

prove that the following holds true for n in N 1^3+2^3+....+n^3= {n^2(n+1)^2}/(4) Let A B and C be sets. prove that (A-B)intersect C= (A intersect C)-B=(A intersect C)-(B intersect C) Let A be a set. let f:powerset of A-----> powerset of A be defined by f(X)=A-X for all X in powerset A...