zoyaxfj
zoyaxfj zoyaxfj
  • 04-03-2019
  • Mathematics
contestada

If the sum of the first n terms of sequence is (2n^2)+3, find the first two terms of the sequence

Respuesta :

jimrgrant1 jimrgrant1
  • 04-03-2019

Answer:

5, 6

Step-by-step explanation:

Given the sum to n terms is

[tex]S_{n}[/tex] = 2n² + 3, then

[tex]S_{1}[/tex] = 2(1)² + 3 = 2 + 3 = 5 ⇒ [tex]a_{1}[/tex] = 5

[tex]S_{2}[/tex] = 2(2)² + 3 = 8 + 3 = 11

⇒ [tex]a_{2}[/tex] = 11 - 5 = 6

Answer Link

Otras preguntas

HELP ME THIS IS EXTRA CREDIT!!!!!!! Mandy’s monthly earnings consist of a fixed salary of $2800 and an 18% commission on all her monthly sales. To cover her pla
what is the surface area of a rectangular prim 3mm,9mm 13mm
what is equal to 2/3
Estimate each product 3/4 times 23
what is a perimeter, but each unit is 1 centimeter
The results of the Puritan and Glorious Revolutions in England were significant for Europe and the Americas because they demonstrated that __________. attempts
On Monday, it took Helen 3 hours to do a page of science homework exercises. The next day she did the same number of exercises in 2 hours. If her average rate o
which state is due north of pennsylvania PLEASE HELP ME
Multiply. –1.1 • (–8) = A. –88 B. –8.8 C. 8.8 D. 88
Which of the following is true of triangular trade. A. All ships leaving from the colonies made the entire triangular voyage. B. The route from England to w