(1)-65
(2)65/24
(0.5+1)*(2/1)=3
(2+3)*(1/3)=5/3
(1+5/3)*[3/(5/3)]=24/5
(3+24/5)*[(5/3)/(24/5)]=65/24
规律:(a1+a3)*(a2/a3)
(3)-44
6-(-5)=11
11-6-(-5)=10
10-11-6-(-5)=-2
-2-10-11-6-(-5)=-24
-24-(-2)-10-11-6-(-5)=-44
规律:An=A(n-1)-A(n-2)-...-A1
(1)-65
(2)65/24
(0.5+1)*(2/1)=3
(2+3)*(1/3)=5/3
(1+5/3)*[3/(5/3)]=24/5
(3+24/5)*[(5/3)/(24/5)]=65/24
规律:(a1+a3)*(a2/a3)
(3)-44
6-(-5)=11
11-6-(-5)=10
10-11-6-(-5)=-2
-2-10-11-6-(-5)=-24
-24-(-2)-10-11-6-(-5)=-44
规律:An=A(n-1)-A(n-2)-...-A1