well..will this work? x + y = SUM(1:N+2) - SUM(array) = a x^2 + y^2 = SUM(1^2:(N+2)^2) - SUM(array.^2) = b so (a^2 - b) = 2xy
so xy = (a^2-b)/2 = k (say) now, x + (k/x) = a x^2 + k = ax (x, y) = (a +/- sqrt(a^2-4k))/2 I may not have written the equations correctly (need coffee !!!) but you get the general idea... solve a quadratic equation to solve for (x+y) = a and (x^2 + y^2) = b - Karthik --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/algogeeks -~----------~----~----~----~------~----~------~--~---
