Question

In reperul cartezian xOy se considera punctele A indice n de coordonate (n, 2 la puterea n)
a) scrie ecuatia dreptei A indice 1 si A indice 2.

Answer 1

An (n, 2^n)

=> A1(1, 2) si A2(2, 4)

AB: (y-yA)/(yB-yA)=(x-xA)/(xB-xA)

A1A2: (y-2)/(4-2)=(x-1)(2-1)

A1A2: (y-2)/2=x-1

A1A2: y-2=2x-2

A1A2: y-2x=0