//question 1

N=8;

M=[1:N];
for i=2:N
	M=[M; i:i:N*i];
end

M

//question 2 

N2=100;

u=3;
vect=u;
for i=2:N2
	u=(4*u-2)/(u+1);
	vect=[vect,u];
end

clf();
plot2d(1:N2,vect,style=5);
xselect();