Given the general term formula of the sequence an = 6-2n (1), write the first five terms of the sequence and find S5 (2) find s5-s3

(1)a1=6-2×1=4
a2=6-2×2=2
a3=6-2×3=0
a4=6-2×4=-2
a5=6-2×5=-4
s5=4+2+0+(-2)+(-4)=0
(2)s5-s3=a4+a5=(-2)+(-4)=-6

RELATED INFORMATIONS

1. Urgent, help me. In the arithmetic sequence {an}, A2 = 2 and A4 = 4 are known. Find the general term formula of {an} and the sum of the first five terms of {an}
2. Given that the general term formula of the sequence {an} is an = (- 1) n + 1 (3n-2), write the 5th and 100th term of the sequence? Like the title, 2, f (x) = AX2 + B, f (1) = - 1, f (2) = 8 Find the value of a, B and f (5) 3. If log ZX = 3, then x =?
3. How to deduce the general term formula of Fibonacci sequence? An = {[(1 + √5)/2]^n - [(1 - √5)/2]^n}/√5
4. Is there a general formula for Fibonacci sequence
5. How to find the general formula of arithmetic sequence?
6. Proving the sum formula of the first n terms of arithmetic sequence by induction It's urgent,
7. There are several ways to find the general term formula of sequence
8. Let plane α ∩ plane β = straight line L. ABC is three points and a ∈ α, B ∈ α, C ∈ β. The straight line AB is not parallel to L, and plane ABC ∩ β = M. judge the position relationship between L and m, and prove your conclusion
9. The center of hyperbola C is at the origin, the right focus is f (2 √ 3 / 3,0), and the asymptotic equation is y = ± √ 3x (1) find the equation of hyperbola C (2) let the line L: y = KX + 1 intersect the hyperbola C at two points a and B, and ask: when the value of K is, the circle with diameter AB crosses the focus
10. Ask the known derivative formula: y = C "C is a constant" its derivative function y '= 0, find the derivative function of y = 2x!
11. If the general term formula of the equal ratio sequence is an = 2 ^ 4-N, then the sum of the first five terms of the sequence is
12. If the first five terms of a given sequence are: 0,3 / 5 (3 / 5), - 8 / 7,5 / 3, - 24 / 11..., then a general term formula is "urgent! If the first term of the sequence {an} is A1 = - 7 and satisfies an + 1 = an + N, then an=
13. Write a general term formula of sequence 1,2,2,4,3,8,4,16,5
14. On the general term formula of swing sequence Sequence 1 2 1 2 1 2 1 2 It is easy to see the general term formula of that Sequence 1 2 3 1 2 3 1 2 3 What about the general term formula? also Sequence 1 2 3 4 1 2 3 4 1 2 3 4 What about the general term formula? Please show me the way!
15. What is the general term formula of sequence 2 / 1, - 3 / 2,4 / 3, - 5 / 4?
16. General term formula for solving strange sequence of numbers A sequence of numbers is 1,2,1,2,1,2,1,2,1,2,2,1,2... So what is the general term formula of this sequence?
17. Sequence - 1.3. - 7.15 A general formula of is
18. The general term formula of known sequence {an} is an = n ^ 2-21n + 20? Answer: if the sum of the first n terms of a sequence is the smallest, then there is an
19. A formula for finding the first term of arithmetic sequence
20. Senior high school mathematics know the ratio of the sum of the first n terms of two arithmetic sequences, how to find the ratio of the general term formula? The sum of the first n terms of the arithmetic sequence {an} and the arithmetic sequence {BN} are TN and Sn respectively, and TN / Sn = 2n / 3N + 1?