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

I don't get this I need help

how did the indians play a major role in the American history?

Most Americans believed it was their responsibility to spread the ideals of democracy.

If a sole proprietor is found negligent of an action, then that person could face:

True or false Roman relieves sculpture show objects in their entirety with no overlapping in order to tell a story clearly whereas Egyptian and Mesopotamian rel

what is isolationism?

A bottle of organic shampoo sells for $7.95. Fixed costs total $9,000 and variable costs per unit are $0.85. Sales are forecast to be 12,000. What is the possib

The imaginary line which passes through the center of the earth to the north and south poles upon which the earth rotates once every 24 hours is called the prim

Of these four words, which one is most likely to have a negative flavor or implication? A. Harangue B. Meander C. Distract D. Confuse

Which is a complex carbohydrate found in plants? fiber saturated fat amino acid cholesterol