Ответ в, т. е. 0,6 (10/17 ≈0,58 , 5/8 ≈0,625)
A)
lim (x+2)/(x-2) = lim x(1+2/x)/x(1-2/x) =lim (1+2/x) / (1-2/x) =
x-->∞
= (1+2/∞) / (1-2/∞) = (1+0) / (1-0) = 1/1 =1
б)
lim (3x-4)/(2x+7) = lim x(3 -4/x)/x(2+7/x) =lim (3 -4/x) / (2+7/x) =
x-->∞
= (3-4/∞) / (2+7/∞) = (3-0) / (2+0) = 3/2 =1.5
в)
lim (x-4)/(x+3) = lim x(1-4/x)/x(1+3/x) =lim (1-4/x) / (1+3/x) =
x-->∞
= (1-4/∞) / (1+3/∞) = (1-0) / (1+0) = 1/1 =1
г)
lim (7x+9)/(6x-1) = lim x(7 +9/x)/x(6-1/x) =lim (7 +9/x)/(6-1/x)=
x-->∞
= (7+9/∞) / (6-1/∞) = (7+0) / (6-0) = 7/6
G=b2/b1= b4 / b3= -3 / 6 = -1/2;
b1=b3/ g^2;⇒b1=6 / 1/4=24;
S=b1/ 1-g;
S=24/ 1-(-1/2))=24/3/2=24*2/3=48/3=16