Question

What are the first three terms of the sequence represented by the recursive formula

1. 12.25, –10.25, 13.25
2. 0.25, 3.75, 5.25
3. –13.25, 17.25, –8.25
4. –4.25, –3.25, 7.25

Answer 1

b on edge

Explanation:

Answer 2

an = n^2 - an-1

a5 = 14.25

a5 = 5^2 - a4

14.25 =25 -a4

subtract 25 from each side

-10.75 = -a4

a4 = 10.75

a4 = 4^2 - a3

10.75 = 16 -a3

subtract 16 from each side

-5.25 =-a3

a3 =5.25

a3 = 3^2 -a2

5.25 =9-a2

subtract 9 from each side

-3.75 = -a2

3.75 =a2

a2 = 2^2 -a1

3.75 =4-a1

subtract 4 from each side

-.25 =-a1

.25 =a1

a1=.25

a2=3.75

a3=5.25

Choice 2