answersLogoWhite

0


Best Answer

The simplest rule that will generate the 4 terms, and the nth term is

Un = 2n2 + n + 3

Then Sn = Sum for k = 1 to n of (2k2 + k + 3)

= 2*sum(k2) + sum(k) + sum(3)

= 2*n*(n+1)*(2n+1)/6 + n*(n+1)/2 + 3*n

= (2n3 + 3n2 + n)/3 + (n2 + n)/2 + 3n

= (4n3 + 9n2 + 23n)/6

The simplest rule that will generate the 4 terms, and the nth term is

Un = 2n2 + n + 3

Then Sn = Sum for k = 1 to n of (2k2 + k + 3)

= 2*sum(k2) + sum(k) + sum(3)

= 2*n*(n+1)*(2n+1)/6 + n*(n+1)/2 + 3*n

= (2n3 + 3n2 + n)/3 + (n2 + n)/2 + 3n

= (4n3 + 9n2 + 23n)/6

The simplest rule that will generate the 4 terms, and the nth term is

Un = 2n2 + n + 3

Then Sn = Sum for k = 1 to n of (2k2 + k + 3)

= 2*sum(k2) + sum(k) + sum(3)

= 2*n*(n+1)*(2n+1)/6 + n*(n+1)/2 + 3*n

= (2n3 + 3n2 + n)/3 + (n2 + n)/2 + 3n

= (4n3 + 9n2 + 23n)/6

The simplest rule that will generate the 4 terms, and the nth term is

Un = 2n2 + n + 3

Then Sn = Sum for k = 1 to n of (2k2 + k + 3)

= 2*sum(k2) + sum(k) + sum(3)

= 2*n*(n+1)*(2n+1)/6 + n*(n+1)/2 + 3*n

= (2n3 + 3n2 + n)/3 + (n2 + n)/2 + 3n

= (4n3 + 9n2 + 23n)/6

User Avatar

Wiki User

10y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

10y ago

The simplest rule that will generate the 4 terms, and the nth term is

Un = 2n2 + n + 3

Then Sn = Sum for k = 1 to n of (2k2 + k + 3)

= 2*sum(k2) + sum(k) + sum(3)

= 2*n*(n+1)*(2n+1)/6 + n*(n+1)/2 + 3*n

= (2n3 + 3n2 + n)/3 + (n2 + n)/2 + 3n

= (4n3 + 9n2 + 23n)/6

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the nth term and sum of n terms of 6 13 24 39?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the nth term for 0 1 1 2 3 5 8 13?

This is the Fibonacci sequence, where the number is the sum of the two preceding numbers. The nth term is the (n-1)th term added to (n-2)th term


What is the formula for the nth Term of these sequences 13 21 29 37 45 ...?

nth term = 5 +8n


What is the formula for the nth term of this sequence -1-7-13-19-25?

The nth term is: 5-6n


What is the nth term of 10 13 16 19?

The nth term is 3n+7 and so the next number will be 22


What is the Nth term of 4 7 10 13...?

The nth term is: 3n+1 and so the next number will be 16


What is the nth term in the sequence 21 17 13 9?

The nth term is 25-4n and so the next term will be 5


What is the nth term of 3 8 13 18 23?

Un = 5n - 2


what is the nth term of 13, 16, 19, 22?

The nth term of an arithmetic sequence is given by. an = a + (n – 1)d. The number d is called the common difference because any two consecutive terms of an. arithmetic sequence differ by d, and it is found by subtracting any pair of terms an and. an+1.


What is the nth term for the sequences 7 13 19 25?

what will the eight number be. 1, 7, 13, 19, 25, 31 ...


What is the nth term 9 13 17 21?

It is 4n+5 and so the next term will be 25


What is the nth term for 1 7 13 19?

The given sequence is an arithmetic sequence with a common difference of 6. To find the nth term of this sequence, we can use the following formula: nth term = first term + (n - 1) x common difference where n is the position of the term we want to find. In this sequence, the first term is 1 and the common difference is 6. Substituting these values into the formula, we get: nth term = 1 + (n - 1) x 6 nth term = 1 + 6n - 6 nth term = 6n - 5 Therefore, the nth term of the sequence 1, 7, 13, 19 is given by the formula 6n - 5.


What is the nth term for -7 -10 -13 -16?

75988 to the 7th