... CONFERENCE IN MATHEMATICS, BEIJING, CHINA 2009BEIJING NORMAL UNIVERSITYDecember 17-21, 2009THE MINH TRANHCMC UNIVERSITY OF TECHNOLOGY VIETNAM4. Find natural number x,y, know that : ( and y include ... ClrHome: Lbl 2: Input “F(X, Y, Z, T) = 0 =”, Str1: Input “G(X, Y, Z, T) = 0 =”, Str2: Input “H(X, Y, Z, T) = 0 =”, Str3: Input “K(X, Y, Z, T) = 0 =”, Str4: Lbl 1: Input « Xo = », A: Input « Yo ... Xo = », A: Input « Yo = », B: Input « Zo = », C: Input « To = », D: 1 → N: String Equ(Str1, Y1): String Equ(Str2, Y2): String Equ(Str3, Y3): String Equ(Str4, Y4): While abs(X-A)...