Question

Considere os pares a=(2x,2y+4), P2= (3,y+12) e P3(4x + y,6 + 7) determine o x e o y de modo :
A- p1 = p2 B- p2 = p3 C- p3 = p3

Answer 1

A- p1 = p2 ==> (2x,2y+4) = (3,y+12) 
           2x= 3 ==> x = 3/2
         2y + 4 = y + 12 ==> 2y-y = 12- 4==> y = 8


B- p2 = p3 ==> (3,y+12) e P3(4x + y,6 + 7)

4x + y = 3==> 4x = 3 - y ==> 4x = 3-1 ==> 4x = 2 ==> x = 2/4
 y + 12 = 6+ 7 ==> y + 12 = 13 ==> y = 13 -12 ==> y = 1

C(P3,P3) ==> (4x + y,6 + 7)= (4x + y,6 + 7)

                    4x + y = 4x + y ==> 4x-4x = y -y ==> 0x = 0y ==> 0 = 0
                6+7 = 6 + 7 ==> 13 = 13