function Q2(n)

	%P0 = 1; P1 = 0.9;
	%for i = 1:n
	%	P = 4 * P1 - 2.79 * P0;
	%	P0 = P1;
	%	P1 = P;
	%end
	%fprintf("n = %2.0f, P = %6.15f\n", i, P);
	%Result: n = 20, P = 0.1094190917 7..
	
	P = (0.9)^n;
	fprintf("n = %2.0f, P = %6.15f\n", n, P);
	%Result: n = 20, P = 0.1215766545 9..
	
end